I'm 48. Kind of surprised to see so many on here and the gymternet in general, that are older than me.
International Gymnast magazine had a forum and that was my first. Can't remember my handle; I was mostly a lurker. I love the sports world in my own way, but I contribute pretty quietly. I don't havE a brain for stats and all that. I'm a fan of Jade Carey these days, just because she seems like a charming person. Very drama free. And her gymnastics is good, but I don't know how to analyze sports, so I couldn't explain how.
Nowadays I'm on a FB for, and called, College Gymnastics Fans. I went to Sac State myself, and yes, I'm a fan. I have to be. I enjoyed my time there, including wgymn meets. As for big guns in the sport, I've liked Cal during recent years. I'm from that state anyways.
Also r/Gymnastics on Reddit.