Far be it from me to step into this unwanted, but that's... an odd thing to take from Semirhage's statement. They're advocating (and have always been) that WHM shouldn't just be made into an idiot job just because someone (you, apparently) decide we need one, therefore WHM should be that. In fact, if any job should be the job that keeps the "211111..." gameplay, it should be AST, so long as the focus remains on the cards.
If you're not advocating for making the WHM into an idiot job, then, excuse me; however, for someone so focused on correcting others and being so wildly specific about keeping details accurate, you're failing to establish that in your argument.
That said, there's no reason why any job should just be an idiot job at all, to be honest. There are many ways to keep a job's skill floor entry-level friendly without enforcing a lobotomy, while allowing room between it and the skill ceiling. The gradually declining space between the floor and ceiling is the reason why players, at least as attested to in this thread, generally tend to leave the healer role for something that they feel has room for growth and rewarding/fun gameplay, even if they usually enjoy healing.