You're just conflating WoW's reward structure with it having more content here. I could go into why i think of the reward systems in WoW aren't as awful as some people make it out to be (for one they changed the most egregious aspects not that long after the expansion launched) but that's neither here nor there.
I don't like repeating myself but i have to ask yet again. What exactly would you lose by there being more content, why would having smaller scale challenging content, a more cared for PvP, more raid bosses and more raid difficulties (ie more for everyone! casual and hardcore alike) be bad and why would it force you to play the game more inherently? Hell why cant we just have more dungeons?
Personally i'd change my perspective of the game completely if they just worked on a hard mode system for dungeons, say akin to m+ with multiple tiers, etc i think GW2 had a similar system too. It wouldn't have to reward more than bragging rights (to incentivize people to participate somewhat, but far from force them) and/or progression confined solely within the system (similar to how doing bozja and similar content progresses your power further but ONLY within the system itself), with a timer and a datacenter wide ladder. Relatively simple stuff like this would open up engaging content for people like me. I'd take anything really, anything that showed they care about actual gameplay. But year after year they refuse to step outside this absolutely stale content cycle.
Yet every time we want to bring up that we just want more of this kind of stuff we have to fight the circlejerk which proceeds, absolutely invariably, to quote the nonsensical propaganda of "it's so you dont have to play as much

". Im not asking for it to be tied to the "main" progression, just give me more enjoyable stuff to do.