Of course it's a red flag? People only ever work for cryptocurrency companies in the first place because they're scammers themselves and think they can get rich while leaving suckers holding the bag. The whole thing is a red flag from the beginning so I don't know why anyone would expect otherwise.
That a wildly unhinged take, they could just work in payments or finance lol but yes it’s a red flag and with that much at stake an insane individual would “enforce” the contract.