I've taken Adderall for over a decade now and am still able to stop taking it on a dime. I recently took a 3 month break (because I wasn't working) and was able to instead, lean on my "trusty coping skills" that I learned as a kid.
I have a bit of an addictive personality (still need to quit smoking (again)), but Adderall isn't an issue of addiction for me... just an issue of how much easier it is to function. But I'm ADHD, so I guess it checks out.
Appreciate the source! I never did fully look into it.