Well those that invest in it also invest in the stat that goes along with it.
Even if you have 2 Skilled Artists, the ones who invest in the stat, as well as the RP, are the Professionals, you could say. And they'll eventually become experts or true professionals down the road. There have been some characters like that in the past (and currently).
Like in Cyberpunk 2020, anyone can get a skill in art or music, but it's the Rockerboys and girls that take it a step above and can truly command an audience. (Even in D&D, anyone can get an instrument, but the Bard knows his shit.)
Was there resentment? I didn't get that. Confusion maybe.
I know Cerb mentioned it is in the works, but OP mentioned a few specialties but only 3 categories:
Performance, Tailoring, and Canvases/Tattoos.
I take it that music, singing, dancing and acting falls into Performance.
Would sculpting and painting things which are not canvases fall into the 3rd category?
And then what about Writing?
(There's creative writing but also Journalism, and then there's lyric writing and then song writing, and then there's script writing. Each of those really are different skills. I'm decent at creative writing but my Journalism and essay writing skills need work. I can write some lyrics sometimes but writing music? No.)
(Some singers sing very well but do not write their own songs or music or only write some.)
It's just some thoughts and curiosity on my part.