I kinda hope to get an account on the waitlist of alpha.polymaths.social, but polyglot.city seems nice enough. I am in no way either a polymath nor a polyglot (well unless you count Filipino and English and class-smart French) but they seem best suited to my interests. Hey I like FOSS and what it stands for, but I'm not super into it soooo. I searched up 'linguistics' and saw polyglot.city and it looked cool enough.