Patrick is an unusual name for a "she" - and being a psychologist doesn't mean someone can't be poorly informed about things.
The article doesn't say very much except for a rather common opinion which seems to miss 90% of the point.
Yes, no wonder autistic people are anxious and depressed when the world is frequently hostile to them. I don't think somehow it's the diagnosis making them feel that way.
There's a BBC article which has much better sources which suggests that the rise in diagnosis is due to the efforts to catch up all the people who have been missed.
https://www.bbc.com/news/articles/cg5vp62dnnro
And this NHS management document shows the estimate of how many people they think currently live in the UK with ADHD - 2.6 million. About 2 million of those are thought to be undiagnosed. There are about 500,000 on the waiting list to be diagnosed, and the large numbers are likely to be part of that "catch up".
270,000 people in the UK receive NHS prescriptions for ADHD medication - which is about half of those diagnosed and about a tenth of the estimated "real" number of individuals with ADHD.
Figures from here: https://digital.nhs.uk/data-and-information/publications/statistical/mi-adhd/may-2025
And here: https://adhduk.co.uk/adhd-diagnosis-rate-uk/