@GuyDudeman The UI of Friendica is not so user-friendly, unfortunately. But it has a lots of features! That's why I like it. I'm a developer type of person so bad UI doesn't hurt my eyes as much as for some people 😄
And yeah. Friendica can be slow, unfortunately. It's developed in PHP which is a slow language/framework. Which also means that one Friendica instance likely can't handle as many users with the same resources as the other systems such as Mastodon, Calckey etc.
A bonus with Friendica: you can interact with people on Diaspora, which isn't possible from Mastodon or the others :)
The Communism part seems to be mostly a red herring, it's added flavor at most. The central core tenet seems to be an anti-American standpoint with whatever authoritarian/dictatorial regime that fits it. Seemingly regardless of political alignments, and regardless of contradicting views from what they claim to represent.
They often purport themselves anti-fascist, but this can be viewed much the same way as the DDR called their Berlin Wall an "Anti-Fascist Protection Rampart".