Bitcoin's Price May Crash After Ethereum's 'Merge,' Researcher Says
coindesk.com
coindesk.com
https://news.bitcoin.com/ethereum-co-founder-vitalik-buterin...
My guess is that in 100+ years there will be many innovations to the Bitcoin protocol. All of them will make sure no one loses their coins. Self interest is the motivator for that.
The bigger danger is being regulated out of existence but that's not happening anytime soon.
Citation needed for Ethereum protocol (not contract) hack.