I've noticed that lots of immortal-radiant players like to split up on attack, to bait the enemies into rotating and force the defenders to play retake, especially in vct. How come iron-ascendant players rarely ever do this? Especially from...

Deathmatch is probably the best warmup method in the game, but the only problem is the amount of angle holding and spawn killing. I think if there was no footstep audio, there would be less of this and it would become a better warmup.