I do think we have to be careful with saying "Just play WoW" because it can come across as dismissive as "Just play a DPS", it's better to explain why WoWs system works there and why it wouldn't work here (availability of AoE heals, responsiveness of actions, focus on burst/attrition, etc.).

I agree largely that if you want WoW style healing it's better to play WoW, FFXIV fights weren't designed for such healing gameplay, and naturally its healers should be designed differently from WoWs. I do at least sympathise with someone who wants to heal more, and large chunks of the game don't have enough bite for healers to feel necessary, but that still doesn't take away from the fact that we're still going to have large amounts of downtime in our fights by design, and we should be able to fill that downtime with something more interesting than Glaroilificosis.