The point was is that they aren't following trends because those trends are already long past. Like, its almost a form of hipsterism to be hopping on a dead fad from nearly a decade ago like this. Even the Battle Royale trend that killed the hero shooters is already reached its decline.

Artifact was at least just a few years off the trend (unless you argue it was closer to a Gwent ripoff instead of Hearthstone, wouldn't know didn't play it), this is basically a whole generation of difference in the gaming industry.