I've worked with younger people in tech. I'm seeing a mix of effects, positive and negative, from increased diagnosis rates.
On the plus side, some people are using their diagnoses to find helpful support material, techniques, and advice.
On the negative side, some people get a diagnosis and then try to use it as an excuse for every personality trait they can fit under the umbrella of that diagnosis.
It's really difficult as a mentor to have to explain to someone that their diagnosis of anxiety or ADHD or autism doesn't give them a free pass in society for all of the things they struggle with.
I've had to explain to numerous people that having an ADHD diagnosis doesn't, for example, exempt them from the same performance review standards as their peers at work. This can be difficult to acceptance for someone who was given extra time on tests and possibly more leniency on assignments throughout high school and college due to their diagnosis. The educational institutions meant well, but the students took the wrong message from their accommodations and assumed it was always the world's responsibility to bend to their personal quirks rather than the other way around. Teaching people that their diagnosis is, to be blunt, not other people's problem is a difficult hurdle to clear for some. Many others get it right away, of course, but the internet rhetoric about neurodivergence leads a lot of people in the wrong direction.