Dependence and addiction are different things. I find the story of mathematician Paul Erdős’s bet on stopping amphetamines illustrates it best where he had no problem stopping but said of the experience:

“You’ve showed me I’m not an addict. But I didn’t get any work done. I’d get up in the morning and stare at a blank piece of paper. I’d have no ideas, just like an ordinary person. You’ve set mathematics back a month.”

If you’re addicted to stimulants, that’s a health problem and has both poor sensitivity and selectivity for ADHD. If someone is taking stimulants and forms dependence but not addiction that is somewhat sensitive for ADHD but has terrible selectivity.