Because people aren’t advocating for pushing up the floors of jobs (which is ironically why old BLM is a BAD example) they are advocating for pushing up the ceilings so every job is accessible but has multiple layers of complexity that you can interact with if you want to but don’t have to (don’t hit me with the “if you can interact with someone you have to, 14 has never had that sort of community enforcement)
Jobs shouldn’t top out at “WHM tops out at dungeon difficulty, SCH tops out at ultimate difficulty”, they should all have avenues of being more complex if you want to engage with the complexity to do more for the party
You should be allowed to be challenged by your job in casual content; not be forced to do hardcore content (which I did and don’t do anymore because I don’t enjoy its modern design) just to not fall asleep at the wheel and if you are currently challenged by WHM in a dungeon then the floor shouldn’t be changed