Your experience isn't everyone's experience, and judging people who struggle more helps no one. I was medicated as a teenager, grew out of it, then suddenly got whacked over the head by it coming back in my late twenties. Medication has helped, and I've learned a lot of tricks to manage it, but the fact that I have to work twice as hard or more to do basic things that other people do without thinking means it clearly is a disability. I'm also autistic and I feel far more disabled by my ADHD than my autism.