I'm a bass player but initially, I wanted to drum, so I saved money with my paper route (I was 12) but figured drums, in the end, would cost waaaay much, so I started bass.
So..... I still tap drums all over the place, and I click teeth, and stuff, and all for RYtHYM. As a bassist, it really helps to practice 'drumming'. So I never look at it as a stim, but an exercise in my art. Don't get hung up over it.
I also was diagnosed with Tourette, so I can stim my butt off if I want, but I see those as kinda spazzy. You are in control when you drum. Makes me feel good ! !!
By the way, after a gig I won't stim for a number of days cause, as a bassist and entertainer, I can 'legally' stim all over the stage, facial expressions and all. That too, Makes me feel good ! !!