Paladin is fun until it's not.

Like ShB Samurai, the inflexible loop makes you feel clever as long as you're being served encounters that don't disrupt your GCD cycle, but it all goes to spaghetti even with slight unavoidable disturbances in uptime, and then becomes more of a chore to realign than a lot of dedicated DPS Jobs.

It may be that some players who prefer a more demanding and precise rotational style see Paladin as a last refuge amongst the Tank rotations, and that's fine, but it's also objectively inconsistent with the other Tanks's styles and feels more like it wants to be a DPS than a Tank in terms of how fussy and sensitive its GCD loop is.

Your opinion may be that you don't care and you still like it that way, and again, that's fine — and I'm not trying to lobby to change it, either, because I personally don't care either way. Instead, I'm just trying to frame why Paladin can feel both jarring and frustrating to people coming from other Tanks once they begin trying to play it "correctly" in complex content.