Not a goady thread and I wont be engaging with posters who want to speculate on the causes by starting debates about parenting and screen time.
But in the absence of any proper data, I’m interested to know whether others think there has been a rise in non verbal children (age 3 and over). I didn’t know any growing up, and now I know 3. So it seems to me there has been a rise but it may just be the area I live in.