He’s an old time Linux guy who went off the deep end and became a conspiracy theorist. He’s one of those people who cries about things “becoming political” just because people decide to make a statement about being inclusive of LGBT folks in their code of conduct.
He’s also been caught just straight up lying about things in his various “investigations.”
Here’s a long video on some of it if you are interested: Video on Lunduke
Matrix is great, but yeah, you’re gunna struggle to find really active communities depending on what you are focused on.
I can get a few of my close friends on Matrix, but the real issue is most of the FOSS and tech communities I’m a part of are on Discord.
It’s rapidly enshitifying though, so might not be long before I leave it for good.