They’re allowed to give feedback but the quality of that feedback is based on what they HAVE done in the game. Secondly, Blizzard has constantly catered to casuals over the years. Pruning, the removal of Reforging, the introduction of Titanforging, the fact that World Quests completely negate most of Normal. I could continue to list instances of them changing the game for casuals, if you’d like.

it gets rid of QoL for no reason. you don’t care though. because muh raiding. whatever.
Balancing actual content is more important than World Content that has literally never mattered but nice try. It was reworked for ALL instanced content.

Even as DPS, my boomkin uses it as an emergency heal when things get hairy. Pop that and my two HoTs and I can usually get right back into the action.
For a Bear Tank, who obviously takes far more damage than a Boomkin, healing spells with a Cast Time, unless they’re insanely short, are not a good choice.
It means less threat they’re generating, and since they’re in caster form, increased damage they’re taking. You don’t even really need to understand how to bear tank to understand that.
Do you have any clue whatsoever how hard things hit in raids/dungeons? A tank, especially? To lose ALL of your mitigation and MOST of your armor for a tiny heal is incredibly reckless and will likely result in a wipe. YOU, as a Boomkin, aren’t constantly getting hit by adds and bosses which requires you to have active mitigation and defensives rolling. The fact that you are even TRYING to compare the two roles is absolutely hilarious and shows you have exactly zero knowledge on what you’re attempting to talk about.