I'm not sure if you're being serious, but a random bit flip can easily put a process in an incorrect state rather than make it crash (say charge a user $1000000

I'm not sure if you're being serious, but a random bit flip can easily put a process in an incorrect state rather than make it crash (say charge a user $1000000 instead of $1), or affect a pointer (of which Erlang uses a ton internally - imagine for a second how lists, maps, and code loading work) and make the whole VM crash when it tries to access it. Or it could just kill the OS itself. You would have to be incredibly lucky to get a nice, clean process crash.