There's 2 groups of players that are just clashing with one another i think. The healer mains who are content that optimised healer gameplay is cycling 2 buttons, and those who are not.
Those who are content, think everyone should be content or play dps. Those who are discontent, believe everyone should be discontent.

I find myself just not caring anymore and have quit healing. Despite my passion for healer/support gameplay in other games, i've accepted that healer gameplay is made so you can teach a hamster to play, and restricted enough to where good players can't really outshine the mediocre ones..
Everything is homogenised to the point where i feel like i'm just trying bites from different kinds of stale bread. The gameplay is unengaging and shallow. Your reward for mastering your job as a healer is vastly inferior gameplay, which also creates a rift between good and bad players, causing a lack of understanding from both sides. The healers who are casual and only hop on to the game every now and then, see nothing wrong with the gameplay given to them. Those who have mastered their job, are miserable just mashing 1 button.