Like any other deck, Snorlax Stall has good and bad match up. I wouldn't say I like playing against it and I don't use this deck often, mostly because I think the matches take too long most of the time. But if the opponent had a bad starting Pokémon, or using a deck that was not prepared to take on the Snorlax Stall you could get a concession right from the start. It is just one of the many decks that I use sometimes. Maybe when I am being pathetic. 😁

I think you should build one yourself, and try it sometimes.

is Keito Arai pathetic for playing it at LAIC and getting a top 8 finish?

Lol, sounds like OP got beat by a Snorlax stall. Better than the brain dead Roaring Moon deck.

Fair, though it needed to transition into mill to get there. Pure stall can't win in top 8 due to timer rules.