Can we say that 2017 was the year when the massed discovered crypto ?
Yes, at least for me. There are several metrics that show a shift in 2016/17. The most important one is the total amount of transaction fees paid, which in 2017 jumped from 10 to 500 million USD. In 2025, it was 750-1000 million USD, and even in the record year 2024 it was only slightly over 1 billion, so the order of magnitude since 2017 hasn't changed much.
Why transaction fees paid metric is so important? Because that shows that people actually are using Bitcoin, and they are willing to pay for it. Most other metrics can be distorted.
This new (post-2017) crypto era or episode has revealed itself in price stagnation as well: BTC price has risen only ca 5x after 2017 and most altcoins have even fallen remarkably during that era.
I think the altcoin market had another shift in 2021, when most altcoins peaked, and since then almost all are struggling to find new ATHs. 2017-21 was still a growth phase for alts like Ethereum or Solana. But where I think you're correct is that the growth was remarkably slower after the extreme 2016-18 boom (Bitcoin dominance shows it).
To name the Silk Road era (2011-2013) "an extreme niche of tech nerds" is a clear exaggeration though - it can be true for 2009-2010. At least in 2012, there was remarkable BTC real world use in both black market (Silk Road) and gaming (Bitcoin casinos) as well as use in international transfers...
Yeah but how many people were using Bitcoin back then? I believe not more than a million or a few more (Google also agrees with that, an estimation says it passed 1 million users in 2013), this is the population of an average large city. Or 0.01 % of the population.
If you want to dismiss some other subjective views of death, then you need to present an objective approach that can be validated otherwise it is arbitrary dismissal that does not make either personal opinion any more valid than the other.

I have not dismissed your opinion, see my last post (you even quoted the relevant part in this post). I have stated why I don't agree with it and my subjective approach is different

The only "objective" way to constate the death of a cryptocurrency would be in a big brother scenario where we know the whole Internet traffic and know that the network is not running anymore. Not possible from today's point of view.
You would find yourself in a small minority, and by most metrics it would be dead (large retractions in everything closing in to 90% and above) and I see no point to hold such opinions in this case.
I do see a point in holding that opinion, and I'll explain why.
My reasoning is that the market is so speculative that the Bitcoin price alone has not much to do with its "fair price". This means that we can see extreme over- and undervaluations. A recent example: No way that the "fair price" of Bitcoin dropped 50% in a few months only based on adoption data. This drop was caused by speculation (profit taking and liquidations). It's even possible that more people hold Bitcoin in April 2026 than in October 2025, i.e. "adoption" has progressed but price has not.
Now back to the scenario where I think a $1000 drop without any fundamental change in "adoption" would be possible. Short recap: bear market that lasts longer than 2 years, no clear progress in "landmarks" of adoption (e.g. strategic reserves, ETFs) bulls are so eager to publish nowadays, followed by several collapses of Bitcoin companies (Saylor, exchanges etc.) and an extreme panic crash through several "key support lines" (e.g. 38k, then the 2022 15k low, and of course $10000).
This scenario is my base for a recovery, not the number "$1000". $1000 was selected because it 1) is approximately the lowest number we've seen in Bitcoin's "mass adoption phase" as I've defined it above (and in two occasions post -2017, in 2018 and in 2020, the price dropped again relatively close to $1000), and 2) because it's a psychological support. The second point is important, because if people see dropping it severely below $1k "many" would
subjectively consider it dead.
In other words: $1000 is approximately the lowest number I can imagine the market to fall without a fundamental (adoption-related) problem.
As much as one wants to dismiss this and hope for an utopian world, a large part of Bitcoin's valuation comes from the belief in what it is, what it can do, and its importance in the overall world. If this belief widely collapse, then it is going to diminish severely by all metrics. No belief, no participation. No participation, no decentralization or security.
This is already a different scenario than mine. I believe in such a "collapse" scenario indeed it's difficult to recover. But that is already a scenario with "fundamental adoption-related problems". It's not an impossible scenario, but I believe the "panic drop to $1000" without fundamental problems is more likely.
The key to differentiate both scenarios may be the evolution of transaction fees again. If it drops dramatically back to pre-2017 levels (<500 million would be a warning sing, <80-100 million $ the confirmation as it would be lower than in any year after 2017) then it is highly likely that adoption is dropping and such a collapse scenario is likely.
Why though? What about then a return from $1m to $1000, that you would consider death? So your death limit is somewhere between a multiplier of 1000x and 100x?

In this case then we could actually state that we are of the same opinion, it is just that there is a difference in the magnitude whereas for you to agree to the same a slightly higher price factor difference is needed -- that is practically it, no?
I don't think the multiplier (and thus the "price itself") is the problem. The problem would be the switch to a clearly different era or adoption scenario.