As a 43 year old woman with ADHD society IS getting better but still a needs improvement on a report card!!!
Medication can help, although it is trial and error to some degree.
But think of the positives: ADHD people are the absolute BOMB in reacting in a crisis situation as we can weigh up all the possible outcomes and come to the best decision to suit the situation we are in.
Hyperfocus is helpful/an absolute nightmare but he will find his super power within this remit.
Remember, opinions are like buttholes, everyone has one, doesn't mean they are right.
It was THE hardest lesson I had to learn was that the opinions of others (of myself as an individual) is absolutely none of my business.
As a parent of a young adult with ADHD as well, we try to teacher her how to behave in society, however, society needs to be far more accepting of the neurodiverse individual. There are far more ND people around us than folk realise.