Many people self medicate with caffeine. It helps with focus and productivity, which is why coffee is incredibly popular. Its not just for the neurodivergent, it helps most people focus, making it a staple of workplaces worldwide.
I have only ever heard people with ADHD describe coffee as calming, but it helps with focus. The problem for those with ADHD is that the mind is too active, so being more calm helps focus.
If coffee helps you do the things you want or need to do, you should use it. Avoid excess, proper dosage is essential for any drug even ones as benign as caffeine.