I mean, 75% of adults suffering from ADHD are diagnosed in adulthood:
https://jamanetwork.com/journals/jamainternalmedicine/article-abstract/217065
If 2/3 of those are women, that means that 25% of adults with ADHD were diagnosed as children, 50% are women diagnosed as adults, and 25% are men diagnosed as adults, which is still a statistically significant proportion of the population.