PieFed has a social credit score and has maliscious code that will tell you one thing while doing another:

If your account has less than 100 Social Credit Score and is newly created, you are not considered “trustworthy” and there are limitations placed on what your account can do.

If your Social Credit Score is at -10 you cannot downvote, you can’t create new DMs and It flags your account automatically so other people can see your shame.

PieFed uses a hard coded list to rank an instances’ defederation list for its quality. If an instance doesn’t defederate from what Rimu decided the instances stated quality goes down. Ironically none of the paedo instances are on Rimu’s list and in fact tolerates a porn instance that has "jailbait" IYKYK

There are some accusations floating around that he is a vibecoder now so stay away imo