In the 20XX game, when an Autoleague fills another one can then begin. At least that's the way it was a few years ago when I last played in one. Is it different for ATG? How was Juiceggg able to create 8 Autoleagues with the same parameters. He hasn't played before so he can't be blamed. Why would the AI allow it?
He built 8 or 10 teams and Strat doesn't care how long they sit unused, so they unfortunately allow multiple leagues to exist that will take a very long time to fill.
You can also join an auto league only once per user. So if he has a bunch of credits and uses the same cap if he selects join auto league it creates a new league if he’s in the one that’s open already