Not sure if I'd list this as a bug or not, because it's not wrong exactly, just a weird choice. There were three jobs introduced within the last year of the game that a majority of characters can go on. "EnjoyANightAtTheTheater" from ahardplaysnight_jobs and "ComplainAboutElectricBuzzing" and "BuyGroceriesAtAKindlingStore" from xmas2023_jobs.
While PremiumCharacters properly were set to do the jobs, they only set NormalSpringfielders were set to the jobs instead of "RegularCharacters". NormalSpringfielders is just the level-up questline characters, not all non-premium characters. Because of this, a large number of non-premium characters don't have access to these three jobs.
Should be a simple fix of just changing "NormalSpringfielders" to "RegularCharacters" in those jobs.