I feel like 75% of Mastodon are people talking about Linux. If you don’t care about Linux you feel alienated. I enjoy Mastodon and Lemmy, but the lack of more diverse subjects gets to me if I browse for too long.
Update: I took your advice and purchased a laptop for Linux, and now I care about it! Problem solved.
I fully agree that the majority of Lemmy users (and probably Mastodon, though I haven’t checked) appear to be authoritarian Marxists, but both my local syndicates and the international workers confederation ICL-CIT have active Mastodon presences, so there’s definitely an effort by anarchists to move away from corporate-owned communications platforms. Could do without the marxist-leninists though, who sadly seem to make up 100% of the Lemmy dev team.