Even the worst player would react when being attacked. I've seen bots insist on attacking ice in Shatter while I just go to town on them. Then come back just to get wiped out again. Then AGAIN.

I've seen them jump off a cliff rather than fight me, I've seen a MCH bot put out a Bishop turret in the process of me firing an LB at them (this is back when they still had a cast time for physical ranged) - NO MCH player would do something that brainless.

There are DEFINITELY bots, and the people using them aren't even clever about trying to hide it.