What's Blizzard done that's technically impressive as of late? They scrapped Titan, and Overwatch isn't particularly groundbreaking from what I can tell.
This is a sad comment that reeks of the gaming community where nobody creates anything so they've no grasp on the feats that these companies have been delivering over and over again for decades.
It's a genuine question; their most recent games have been an FPS, a MOBA, and a card game. I can't tell what "cutting edge game tech" that they happen to be creating with them.
Good games? Depending on your outlook, yeah. But there's nothing really...different? About them?