the point is also, that a 51% can't kill bitcoin actually, because it would only mean that its price will restart from one/zero, like a new birth, thus making pointless do a 51 only for killing it, normally one would do it for the money...
I agree a 51% attack doesn't kill Bitcoin. The network per si would remain alive. But if you can't do a transaction, Bitcoin is useless.
The issue is not about the lack of profitability of a 51% attack. The issue is more political. It's about doing a 51% attack to force you to use fiat money.
well in that case it wouldn't change much right? because the majority are here only for fiat currency seeing how their only purpose is to dump for fiat