What makes you believe that to be the case? Lemmy.world is overwhelmingly liberal/socdem, but the broader Lemmyverse is Socialist leaning, whether Marxist or Anarchist.
Lemmy has ~390k users. Just over 150k are on World. That's almost 40%.
Another ~50k are on NSFW, and can thus be assumed to not care. If we remove them from the equation, we get ~44% being on World.
The third-most popular instance after World and NSFW is .ee. The people there are broadly progressive but usually not socialist. They have just under 29k.
Have you done a poll of the percentages that identify as liberal vs socialist on these sites, or do you genuinely believe there are no Socialists on .world or .ee?
I'm not assuming everyone there isn't socialist. I assume that most aren't, based on anecdotal experience.
For some reason lemmyverse, where I got the other stats, doesn't mention .ml, though it mentions the Enterprise subdomain, which I hear of for the first time.
If you can find out the number of comments per week on .ml, I would be glad.
If you're just working off of vibes, then what's the use?
Either way, I am unsure of the comments per week or active user count of Lemmy.ml, but it is large, larger than Lemmygrad or Blahaj, and probably larger than Hexbear.
You yourself said that World is mostly socdems and liberals. Once you're here for long enough, some patterns become visible.
Either way, I think I'll try to cook up a poll so we can measure the class consciousness of Lemmy, haha. Do you think asklemmy will accept such a post?