SE has no idea what these jobs even are in this game. There's no class fantasy, everything is a weird amalgamation of stuff from other jobs in earlier games or something completely out there. Like, AST having a bunch of corsair abilities or WHM being tree huggers. In this game's early quest to be as unlike FFXI as possible, a lot of traditional, comfortable job lore was lost.
And I'm not saying SE is the worst developer in the world over it, but they backed themselves into a corner with a lot of the design and carving out unique identities for jobs is almost impossible... because so few of them are *actually* one job.
Should SMN have raise? I don't think so. I think that the way this game's predecessor was, hit the job fantasy squarely in the bullseye while allowing other jobs to 'borrow' as needed\as content allowed. WHM with all the raise levels, with a basic raise low enough level that any job subbing it could get access. Other healers got access naturally and so did RDM (white magic) and PLD(holy warrior), but couldn't learn the highest levels and got it much, much later. That was a WHM skill. That made WHM unique while not barring other jobs from access.
But we can't have that here because now, everyone demands every job performs equally. So folks will complain about homogenization but at the same time don't want 'their' job to be the one that doesn't get Raise... I think the team at SE is doing the best they can with the feedback they are given.
