One thing to not overlook is how extremely niche quite a few actions within the healer kit are.

You'll find many who won't have Cure 1 on their bars anymore. Repose not being bound may even be in the majority at this point, it's nigh useless outside the job quest and very specific content at this point. Rescue is another that personally I think is an underrated tool, but many view it in a far less positive light.

Does warrior have anything that's as niche as these three? A newer casual might say Arms Length, but then that opens up Sure Cast as another skippable ability for the healers (which it isn't!).

Another thing to consider is that healers may feel like they have fewer buttons because so much of their time is funnelled into pressing a select few.