AFAIK the devs are supporting communist ideologies, especially maoism and they like the USSR’s demolition of independence revolutions like the hungarian 1956 and the checzh 1968 uprising.
They also made a controversial statement about the Uyghur genocide too. I’m not sure about the specifics tho.
Maybe he means lemmy.ml and lemmygrad perhaps? But even if you are on a different instance, you are still using the main dev’s fruit of their labor.