It is one thing to hold an opinion; it is another to limit which opinions others can see.

Lemmy devs hold a very radical and strong opinion, but they don’t enforce it on anybody else. This fosters a healthy and open discussion and political development. You can have any instances posting whatever.

PieFed dev enforces certain optics by limiting the sources viewable through it, and some of the choices raises eyebrows in a major way. For example, did you know PieFed bans WikiLeaks? No matter the political stance, you’d rather be able to cite that. This open censorship limits political discussion and serves to reinforce Rimu’s political line instead of going for an honest intellectual exchange.

We have plenty of spaces trying to shape people’s opinion. Fediverse is the direct response to this threat among many. Why would we want to turn Threadiverse into this again?

Again, with that said, I tried to give a more neutral outline. Objectively, Lemmy the software is politically neutral, while PieFed is not. If you share the values baked into PieFed, you may end up enjoying this experience. But overall, this is often seen as problematic around these parts.