Getting rid of accommodations in general is not the right thing to do, and I am very glad that you were able to get the sorts of support you actually needed, as opposed to just the cookie-cutter extra time on exams.

That said, giving time and a half or double time on exams to anyone who takes the time and money to track down a compliant enough medical professional to diagnose them with ADHD is not the right thing either. And yes, some people really do have ADHD and need various support, not limited to extra time on exams, to succeed in the school environments we have created. But _so_ many people are diagnosed with ADHD who have nothing of the sort...

Anecdotally, my acquaintances who teach at elite liberal arts colleges say that 25-40% of their students nowadays are receiving extra-time accommodations, a sharp rise over just 10 years ago. It's possible that the prevalence of ADHD and various mental health issues really is that high amongst high-performing teenagers nowadays; the college admissions crapshoot and lead-up to it surely is not helping with mental health. But I find it much more likely that there's a significant amount of gaming the system going on, unfortunately.