I remember few years ago when Vitalik decided to fork his blockchain to roll back the transactions from DAO hack.
Imo, that was the end of ethereum... It became Vitalik's blockchain .
It really was, for me, the end of ETH knowing how the lead developer himself can force such rollback in a supposedly-safe ecosystem from such authoritative powers. However in this one instance, I don't think Buterin would have to do something, or at least express his views about what happened seeing the flak he and his team received when they did the rollback years ago. Besides, this particular hack is not in any way relatively close to the DAO one in 2016, and is mainly attributed to bad code as was stated by multiple developers months prior to the hack.
You know shit is about to go down when the same people don't listen to experts' advice on a particular matter that could potentially lead to a possible destruction of one certain part of the system. $25M is a huge sum, and I don't think anyone is going to be happy receiving the news--especially the investors.