>>718809458
Even if you get everything down in 10hrs, those games leave no room for personal improvement because the mechanical skill ceiling is so low. There's simply nothing to git gud at. Low TTK just means the guy who spots the other guy first wins 90% of the time. You can't really escape an encounter or drastically outmanoeuvre them by using advanced movement. Your only option is to shoot back and hope for the best.
It's stale as fuck and everything about it is designed for instant gratification. Multiplayer FPS died after TF2, which betrayed it's own design after adding hats and different loadouts. Everything after that is garbage upon garbage.