I don’t think it’s about what it’s being used for (I haven’t seen anyone mention that), it’s about the fact that people have warned about a broad attack vector for a really long time when you create arbitrary complexity, and then a “smart” contract in a literal cold storage wallet got emptied. Thats about as bad as the situation gets and a perfect example that the many claimed “features” are in fact security concerns.
Also because ETH is centralized garbage and that’s what has happened before, they get a small cabal of “important ETH people” together and roll back the chain.