From my PoV, people rarely care about the actual dps numbers. When we went through the m+ progress, people did not really care about doing 4 or 5k dps, they liked how our "work" made dungeons easier. It just really is a discussion, what is Wow, what can change, and what should never change. And I at least, think that this gear progression is a core psychological thing, that makes you enjoy the endgame.
I am not even saying that changing this would make WoW worse, it might make it even a better game, who knows. But it would cause a significant player drop imo.