Some people will not understand what bitcoin is, I have some bitcoin right now that I am not planning to spend at all. I have one for retirement purpose in case anything happened. If I leave it in fiat, it will not be good because of the inflation in my country, but I think it can go x5 or more in the next 10 years and more later which is better. Some people are just thinking about bitcoin investment like something that is very risky. Few of them will prefer ponzi scheme, trading or what that may later make them lose the money.
We can surely think about bitcoin as an asymmetric bet to the upside which means that as long as you do not leverage, the most you can lose is 100%, yet at the same time, there are reasonable probabilities that bitcoin prices can go up significantly, such as 5x in 10 years as you mentioned or even 100x or more, and sure neither the amount up nor the timeline is guaranteed, which is also part of the nature of an asymmetric bet, for anyone who might try to understand why bitcoin ongoingly has upward pressures on its price, in spite of ongoing battles about bitcoin taking place too.
Regarding trading and/or shitcoin involvement, yep, so many folks will be lured into those inferior approaches to bitcoin and/or those inferior assets because they likely do not know any better or maybe they cannot figure out how to approach bitcoin from an investors mindset that likely would have a 4-10 year or longer timeline.
True since and great projection out there, but people need also to have this thinking that nothing is guaranteed so they would think about realistic ways rather think that Bitcoin is same like a ponzi schemes. But with great combination of current happening right now which is the adoption keeps growing then it only have fixed supply, this will give good possibilities that price will eventually pumps up in future.
Usually quick profits is the one reason why many people got pulled in on those shitcoins, especially for those people didn't understand the long term nature of Bitcoin. But if people understand that its better to approach Bitcoin with the mindset of multi year investor, there's really a chance that they would never chase a quick profit and volatility will be much easy to handle and they've got less pressure.