About the politics, that's worth reading from the developers:

On another topic, there are rumors circulating that we are fascists or supported genocide. These claims are completely false, and like most viral twitter threads, are coming from a single Mastodon user on a personal vendetta who didn’t provide any sources. Such slander doesn’t deserve any response and is best left ignored. If you want to know the truth then read the following pages (both from 2021):

History of Lemmy

What is lemmy.ml

As you can see we are not a faceless corporation that is accomodating to everyone. We are individuals with our own opinions. If you disagree with these, it is no problem! You can still freely use the Lemmy software on different instances. If you host your own instance, we have no control over it at all and are unable to censor what users say. For more details read the documentation on censorship resistance. In practice, the instance list already contains various instances whose content would be banned from lemmy.ml immediately.

Source: https://join-lemmy.org/news/2023-06-17_-_Update_from_Lemmy_after_the_Reddit_blackout