I also dont mind the whole chain coming together to vote to reverse the transaction.
I also dont mind a bunch of people being unhappy with that and forking.
In a western legal framework you might argue promissory estoppel if the foundation made certain statements about it, but if you take the libertarian code-is-law stance and you want to be consistent then you probably should have researched exactly what was possible at that level before investing.
So all-in-all, seems fine to me.
While I am happy to celebrate dumb crypto stuff, this isn't a situation where someone's code was "exploited." Their code was stupid, relying only on an off-chain private key to allow the minting of tokens. Their security was just also bad.