Cheating still exists in ALMOST all of their titles.
Maphack and production hack are still things in starcraft 2.

Maphack is still a thing in starcraft remaster.

Maphack is still a thing in the diablo series online.

Maphack is still a thing in warcraft 3

They need to make it completely impossible for anyone to cheat in their games. If riot games can do it with league of legends, so can blizzard.

And no, periodically banning the cheaters through banwaves does not solve the problem at all given anyone can make a new account to play on.

Cheats ruin player experience and blizzard should be competent enough to make their games entirely cheat-free.