I won´t call it so hard subjectively seen. Of course i´ve written "for me", but the thing is, that FF14 doesn´t offer much of a deep gameplay and i agree that you can easily learn a lot of classes at the dummies. Rotations can be learned from anyone. Proccs are just buttons you press as fast as you can. The so called "skill" is more up to decision-making if things goes down under or to find the perfect strategy / spot to beat a boss. Unique gameplay has become really rare with all the class and boss changes.
The current monk is a joke yes, but permanent positionals and the decision about SSS/FS/chakra/TN and RoE are atleast something you can work with. BLM is probably the only class who adjust with the rotation based on proccs and triplecast / teleport etc. Ninjutsu are kind of unique too, but still to "meta-related". I mean, it´s obvious which skill you force to use in several situations.
Healers are actually those who always need to adapt, because some bs can happen at any time and there you clearly see a gap between good and bad healers. On the other hand they are able to perform a clear "healing rotation" thx to the overall boss design.
As i´ve said in the beginning, phys. range are not alone with that thx to SE´s decision-making and primitive boss design. The most classes rely on "press button X in moment Y" and that´s far away from what i personally would call "skill" or atleast deeper gameplay.
You´re right, but such skills are personal things. It´s hard to improve for a lot of players, just because the evolution didn´t gave them such gaming-abilities. It´s not possible to measure them. You can only measure DPS, heal and medigation.
The most players just play for DPS and that´s why they fail and / or force the raid to wipe after a death or whatever. It´s like always the E-D comparison and in the nature of humans to feel good to climb "at leaderbords". Aside from that, how hard is it actually to medigate or heal? The most healers are just in trouble because ppl get a hit or die and they wasted swiftcast in their own rotation or don´t have enough mana left thx to pure crit builds. Medigation is just a button you press when the boss casts his aoe. The most players do even rely on any guides, because they don´t read their skills or don´t want to go blind into a bossfight. Even if they do, mostly just 2-3 players arque about a decent strategy. (Man there is even that stupid bot...like why?)
That´s pretty much all this game offers imo and i can feel that healers are the next one who´ll get dumbed down. I can´t understand how so much players can be happy with this and just some new buttons / a different rotation each expansion or actually care about DPS only. The gameplay could be so much more with all the old status effects, TP/MP, tanks and healers being forced to stack their unique stat instead of crit, hardhitting bosses and not just defense on TB, no invul, no heal LB3, just one rezz per bossfight, skilltrees, 3 bosses at once, kiting, dps checks, and and and... and first of all, deep and unique mechanics for every class, not just gimmicks with new animations and bars to load.
SE doesn´t even give the players the chance to improve with their current content line, especially on tanks and phys. range classes.