If 51% of the miners decide to fork, I think I will follow the majority and support the fork to get back the money from the attacker.
In other words: ETH is centralized and susceptible to corruption. 
For most coin holders, serious bugs that can ruin a coin should not be acceptable.
For any single rational person, decentralization and immutability should be the priority in these coins. Without that aspect, you're just left with inefficient systems.As it should be. If crypto isn't censorship-resistant it's a toy. What has to happen to block the fork? Anything miners or nodes can do to stop it?
Miners and nodes should be able to stop it (unless it works a bit differently with ETH). As long as they don't update, then everything is fine.