>>56519088it does cheat
I tested it in gen 7 with a team consisting of
Garchomp
Dragonite
Mega Salamence
I was constantly put against full ice teams, but since ice sucks it usually wasn't an issue.
One glaceon got 'lucky' enough to land 3x quickclaw blizzards(70% accuracy) in a row though.
None of my other teams ever encountered full ice teams.