I think the counterpoint to this is that while you levelled without going through dungeons, you were still participating and learning from content. You still had to know what your skills did, to some degree. Jump potions for new players, on the other hand, could be said to be having an effect on the community -- a lot of us are ending up in level 60+ instances with players who don't know how to stack, don't know what their tank stance is, etc. I think the onus is on SE to make sure players are prepared and actually learn their jobs, but I don't think it's about wanting power over other players.
I wouldn't mind jump potions, but it is frustrating to go into content with underprepared players.