People need to realize you can use alternatives
All I know is that you should avoid lemmy.ml. In their /c/WorldNews community, an admin gave a four day ban to a user for posting an Axios article about the Chinese succession plan for the reason of “Orientalism”. Those guys are tankie shills. In my experience, lemmy.ca, sh.itjust.works, and lemmy.one seem solid. Obviously I personally went with lemmy.ca. But you should check out the admin profiles before you join any instance. That will tell you most of what you need to know. That and the modlogs (found at the bottom of the page) that will tell you what posts have been taken down and what people have been banned by mods on various communities.
China and Russia. Thus censoring legitimate western media articles about China. There’s also a lot of anti-NATO bullshit. Here’s the Axios article they banned a user for posting.
legitimate western media articles
anti-NATO bullshit
Out of idle curiosity, do you self-identify as a leftist?