It is not an idea anybody had, it is just FUD. Every time there is a Halving, there are people who spread this FUD about "miners going away and bitcoin dying" but it never happens. The nature of mining is in a way that it keeps going and when it is accompanied by price rising, the miners' profit grows too but in the long run.
Don't forget that price wasn't always $65k-$70k. It's not so long ago when it was less than half this ($30k-$35k) and miners were making a lot of profit then. And with 3.125BTC reward at $65k we are at the same place as back then!
uh, what happens if bitcoin price ever goes back down into the $40k or even $30k range. would you then admit that it is a failure? because then miners would be in trouble.
Well, of course, we hope that it will get low over time, but still, we're not sure when it will happen. I think this high transaction fee will be in there for quite some time.
miners hope it will be there forever!
If we can endure it, then it's better not to engage in any transactions for now as it is not worth it, especially for small transactions.
you'll never hear someone saying that who holds fiat. it costs nothing to spend their money. so maybe thats a good reason to use fiat. and maybe keep bitcoin as something that doesn't need to be spent but just held for price appreciation purposes. clearly bitcoin is not so user friendly when it has high transaction fees. everyone loves bitcoin when the transaction fees are low but when they get high, you start to hear them grumbling.