I'd start considering players to be "pro" at around 2600 lichess rapid, which is a pretty normal rating for an International Master. (Mine is over 2200 and I ju

I'd start considering players to be "pro" at around 2600 lichess rapid, which is a pretty normal rating for an International Master. (Mine is over 2200 and I just consider myself to be pretty good.) 1800 is still in the "learning how to play well" stage but getting there from a standing start in 6 months is indeed nice progress. He doesn't seem to claim it's anything more than that, which I appreciate.