Is a level skip worth it?

[Edax]

Grinding the same dungeon over and over =/= progression
playing POTD over and over =/= progression

It is if you're progressing.

While in single player games, its more about the journey, in MMOs, leveling is about the end goal, not how or what you do to get there.

Leveling isn't just about the end goal. There wouldn't be any point to leveling if it weren't appealing. There wouldn't even be a need for a leveling system if that were the case.

Imagine a game where the only part of it was slowly leveling your class/job up and that was it. Nothing to use that job in. No story, no end-game content, just leveling. Maybe you'd like that, and if so that's alright, but at least in my opinion, that's not a very good payoff for all that work.

Well in your hypothetical game, there's no progression because nothing changes in gameplay. One of my favorite parts of an RPG is when I'm low level and I'm constantly experiencing a dopamine rush from rapidly unlocking new content and gameplay. It's some of the most dynamic part of an RPG.