1) And slowly, all of those are being phased into Non-MMO situations. Where you don't have to deal with multiplayer content. Which means, once more, you are not forced to learn anything near of what the community expects of you.
2) Let me put you out of your misery. The devs are the one's that have the community on a leash. They are the one's that determine job changes, content design, the one's that even allow you to attempt to wall to wall pulls. And going against dev decisions, is how you end up breaking ToS and getting banned from the game. Going against the playerbase is not going to get your account wiped out. Half of you have an ego because you haven't played a game before where the devs actually abused their authority and trashed every playstyle and mechanic that you cared about, repeatedly, for a decade. If you don't plan to unsub in mass, your opinion is irrelevant which is why we're in a Healer Strike right now as is.
3) *skips first half of assumptions* "all roles get the minimum tools needed to perform their job". Exactly. The Minimum. Minimum =/ Core Kit.
DRK = missing Blackest Night, core to their mitigation rotation
PLD = missing Clemency which was a massive game-changer in completing content with job utility, as well as every ability that's a group mitigation or damage transfer
GNB = no combos at 50
WAR = no raw intuition, core to their mitigation rotation
People have complained for years that jobs do not play anywhere near the same throughout the various levels, even at 50. And Yoshi-P has even mentioned that they've thought about how to address this.
As for GNB:
"what your mitigations are" -> reading a description is different than forcing you to rotate cooldowns as a success condition
"to activate your stance" -> you mean the button you hit 1 time at the start of the instance and never use again? such an amazing tutorial feature
"use your combo" -> Did it teach you how to allign it with your damage buff? Did it teach you how to sync it with your other long damage ogcd and gcd combos such as SB, DZ, RD? Did it teach you how to move the boss while doing combos? Did it teach you how to use mitigation in the middle of the combos? Did it teach you that you could break your combo with other actions and still keep the proc actives? Did it teach you 3 target vs 2 target damage rotation numbers? When you unlocked Bloodfest, did it teach you your entire burst window with reset'ing the cartridge count or teach you a sped up opener?
No. They taught you how to push a button that lit up one time, and another button that lights up after you push the same button 3 times and none of the complications and intricacies that come with it being played in a normal manner.
4) "as far as they can" That's the copium. Try as you might, you're not important :3