Allow me to extend an olive branch:
Honestly I get it.
There is the expectation that healers should balance dealing damage and keeping their party members alive. No other job has to juggle targets around this much- You switch from Enemy to Ally constantly, AST being probably the worst offender. On controller, AST target switching to throw cards is almost painful. So in order to make this process accessible, the Devs decided to make the juggling of the two very simple.
Each further change of this juggling only serves to make it more accessible:
-Removal of actions while maximizing potencies. You press less variety of buttons, meaning you have to keep track of less things to contribute the same.
-Shorter cast times to ensure ease of weaving without punishing the healer damage. Devs want you to DPS, they made it easier now to both cast your Nuke while weaving in healing.
-Giving Tanks more self sustain tools to make sure they don't die to auto-attacks, giving healers more time to adjust their juggling. It also eases the pressure to keep an eye on your tank's HP.
But the thing is, not all healers are AST.
WHM and SCH primarily have so many automatic heals and mitigations that they can easily spend their time focused on Damage. Why, then do they have basically the same DPS kit as AST? Why does Sage, the new "technical" healer for "advanced" players that "focuses" on DPS have essentially the same buttons as WHM and SCH?
AST complaints revolve around the card system being simplified or losing its flavour.