Tank healing is to high

[Lyth]

...

My reaction to this game has been largely the opposite. Boss encounters in ARR and HW genuinely felt like you were rationing out cooldowns to survive. Cleaves hit like a truck. Now it largely seems like you're an oversimplified melee dps, just waiting for red arrow to show up so that you can invuln swap and turn off your brain for another two and a half minutes. The worry isn't about 'low pressure' content. The worry is that tanking hasn't been a high pressure role for the past four years and counting. And the addition of more and more powerful defensive tools in the absence of situations that actually force you to use them just contributes to that ennui.

These changes are really just there to make the role comfortable to beginner tanks who would otherwise be panicking and roaring at their healers through the screen the instant that their HP dropped below 70%. It's okay to be scared. That's what makes tanking fun.