I'm well past 300 once you start adding in conventions, LARPs, and mega games.
Every circle of friends that I've ever had outside of my current occupation has branched into at least one RPG group. I stood at about 30-40 people between 6 groups before I went to college. At college, I ran the university gaming club and that number tripled within a year. Things have slowed down for me, but over the last decade or so I've added a handful of different board game and one shot RPG groups each with their own cast of characters.
Since the pandemic hit, I started an online West Marches campaign that originally melded a group of my old college buddies with a couple of people from my book club gaming group, and over the last year that group has been pretty much taken over by about a dozen of the original group's friends, students, and coworkers who I've never met in real life.