Making it easier to play (i.e. removing specific sequence requirements, reducing the number of buttons in the rotation, reducing situational decision making, etc) would just reduce the enjoyment of the combat system. It's fun for many because you have to have the mechanical skill to hit things in the correct order at a fast-ish pace.
Turning every class into DH would instantly make the combat trash.
Also, don't fucking tell me about how the game needs to be easier to play. We have a BM hunter who routinely parses orange that's a fucking CLICKER. Having to learn proper rotations isn't some extremely high bar you think it is, and making the game's combat faceroll is just idiotic. Plus, there are now more tools than ever to help players. Hekili can essentially tell you exactly what you need to press next in your rotation.
I wonder if you consider FPSs or the normal attack spam simulator like elden ring to be "simple" because the premise of what you do is easy to grasp? Again, I prefer games where the premise is the difficult thing and you actually need a brain to play but executing the plays is easy (in wow's case, virtually guaranteed). Games where the premise is simple but the execution is hard (i.e. "dodge boss attacks, hit boss with your attacks, repeat till dead" is easy, but successfully dodging all those attacks while getting your own hits in is difficult) are vastly more boring most of the time.