Yes, many individuals with ADHD can cope without medication and may go on to live good-enough lives that might be the envy of others. However, there may be a lot of potential being left on the table staying untreated.
So to say that someone clearly doesn’t have ADHD because they don’t have a rep of reckless driving tickets because of impulsivity lapses is a bit of a slap in the face for many who still do, but developed compensation strategies to some extent.