I totally don't want to project anything negative onto the OP but while reading that post and a few others here I had the oddest thoughts about FFXIV social justice.
Something like "tanks and healers get instaqueues so they should give a portion of their exp earned to their DPS" or even worse someone telling me to "check my healer privilege"...
It just gave me the creeps. I've felt similarly about other threads like this but this one really bugged me.
Tanks and healers are different classes. Complaining about not getting the same queue time or exp efficency as one is like me playing WHM and complaining I can't eat a tankbuster... it's silly and nonsensical. You are playing a DPS. That is a different thing. At the end of the day we all run roughly the same number of dungeons to level up, the only real difference is support roles generally have a bit more say in exactly when those dungeons start.