Board Game Arena

It's a totally valid strategy. That said, I mark people who play that way as people I don't want to play with ever again. Because I find Gin rummy boring. That's why I'm not playing it. So even though it's a valid strategy, it makes me not enjoy the game.

Because it's a cooperative game and and if they think you're making a mistake, you're affecting their ELO. Apparently some people have such sad, small, and boring lives that their ELO scores on here are all they have to care about.