I have a little bit of sympathy to this. The casual old farts guild I’m in lost a handful of players early on due to the difficulty in M+ and raid.
But the timer is fundamental to what the challenge is. Without the timer the challenge would need to get re balanced to be like a raid where if you can’t time a key then you wont be able to even complete it.
Personally I think the solution is along the lines of things discussed here:
Basically I think the combat has become visually non intuitive and overwhelming for a lot of player. Especially if they’re not using gaming mice with extra buttons. And I think there is way too much “in the know” one off gimmicks with the mechanics and affixes that are again, non intuitive. So you have to dig through logs and go to external websites to figure out what just happened and how to counter it.
The game is no longer about perfecting and optimizing your rotation but trying to fit it into the constant game of run out of circle which is more frustrating and anxiety inducing than fun for a lot of players.