/r/bjj is my favorite, it has the perfect balance of extremely useful discussion and knowledge sharing along with some percentage of shitposting to keep it interesting.
To add to this, martial art communities are great because you get to meet all types of people. I train regularly with an Uber driver and a professor. You get to have serious in depth conversations and goofing off cause at the end of the day, you just like beating up your friends!
Surprisingly a noticeable chunk of the people in my bjj classes were software engineers. A lot higher percentage than in my boxing or muay thai classes.
I've noticed that too, especially in the gi compared to boxing. Lots more doctors / lawyers / engineers training in the gi. I think it's because we're all weak and need the grips to slow people down, haha. Well let me speak for myself, I'm weak and need the grips to slow people down.
Hah, could be a strength thing but most of the guys/gals Ive spoken with about it seem to join choose bjj over another martial art for the brain safety. Way less chance of a concussion in grappling than boxing, kickboxing or muay thai!
I prefer the Gi too, work on your monkey grip in no-gi if thats giving you problems though!