Ok, first of all, I'm an old player, I'm playing since 2004 and I have done pretty much everything on this game until now, from high-end pvp (gladiator) to high-end pve (algalon/LK, mythic raiding, +22 keystones) and some multiboxing too.
I have never felt this before but I find it impossible to play with keyboard/mouse now especially pve. Spamming one button drives me crazy to the point where I can no longer stay in my chair and my hand hurts. It feels like some kind of gym exercise and it's a terrible gaming experience. I have played other games too but it's not nearly as bad. Eg. on destiny 2, you never have to spam something and your fingers can rest every now and then. On WoW it feels as if the mobs/bosses have an incredible amount of health and you have to spam, spam, spam, it feels like punching a wall, it ruins your psychology. Since the beginning of shadowlands I'm playing with a controller and the gaming experience is by far better with it, occasionally I switch to keyboard and the same thing happens again. I gotta admit wow is one of the best games when using a controller due to the incredible support. Even though the problem exists on controllers as well, it's not nearly as bad.
I have been using one button gse macros since legion but I don't recall such experience before. Is this spam one button playstyle outdated? I think it's too tedious. It barely feels like a game anymore...Do MMORPG need a rework in order to make the gameplay more meaningful?