I wasn't paying a lot of attention back then, but from what I've read about it, it was far from the worst decision in the world despite the fact it went against the most basic ideology.

I give it a bit of a free pass because it was a new thing built on top of a new thing, so somewhat of a beta test, which failed, so roll back to a working state.

Not sure what would happen now, although there are regular hacks that no longer see rollbacks.

Also, Ethereum Classic still exists, so that path is still available to those who want to follow it.