Like autism, the diagnostic criteria are almost exclusively framed in how other people are impacted or inconvenienced by it. Very little attention is paid to the experience of the person actually living with it.
I see it as a difference, but not necessarily a disorder. As someone with "severe" ADHD there are tons of things that I'm substantially better at than I would be if not for the condition.
I believe ADHD is "rising" because our culture has grown more homogenous in recent decades, resulting in people with ADHD attempting to adapt to environments that are designed for and run by people without ADHD.