I mean, the kids who got diagnosed when I was in school, 70s and 80s, were off their rocker batshot problem kids. My mother was a special Ed teacher at one point, and they were PROBLEMS.
Now, kids are diagnosed autistic that don't seem to be anything but shy and anxious. One of my best friends has a kid who was diagnosed at age 5 or 6, STILL falls under the umbrella at 16, and ...well.....never seen a thing wrong. Never been in special classes, no behavioral issues, great grades, socialized. Nothing.
But I bet whatever meds they are prescribed are a billion dollar Industry!