Hey that's awesome, I'm excited to hear it!
I don't think it's GMless, and I'd be interested to know how that reviewer came to that conclusion, but I'd definitely say that the GM role in QLLS is minor compared to the mainstays of roleplaying games. The Gloom is the GM, but the Gloom is also another player that has to share the spotlight with everyone else. The original intent was to nudge the GM to not expound for minutes on end about this, that, and the other thing. You know, not talk at the other players so much, but with them in order to tell a more interesting story.
Feel free to let me know if this is helpful, or if there's anything else you need. I'm glad you like the game!