That’s what PieFed changes though. You can still track how someone votes, but you can’t tie it to a specific profile (without doing some extra analysis and even then you can’t be completely sure).
Or, with my suggestion, you could track how that specific account votes, but it would be easy to obfuscate who exactly it is and (hopefully) impossible to track to the user’s other identities.
Sorry, no, it’s not “completely normal” to freeze an account for weeks without any recourse or communication and then be like “all good I guess”.
You could easily break a company doing just that. It really fucking sucks and should never happen.