My take is that there are:
1. Genuine rises in the rates of disabilities
2. Big increases in disability awareness with the advent of the internet (I frequent parent support boards sometimes and a very common theme is that parents get diagnosed as neurodiverse after their child is, because they simply didn't recognize the symptoms. Many people have a big "Aha!" moment about quirky behavior that has been in their family for a long time.)
3. A different attitude about disabilities. I grew up in the 80s where it wasn't that uncommon for broken bones to get missed because parents told kids to stop whining, they weren't taking them to the doctor for "every little thing". Kids with milder issues were often just labeled problem children and left to languish. Now support is much more plentiful.
Having said that - I do think that cheating is probably going on as well. I was at a local festival recently and paid for a wristband (for certain paid attractions) for my son, who was walking around with his dad. I was exasperated because they wouldn't just hand me the wristband, they made me go locate my son and bring him back so they could personally put it on. The woman was apologetic and explained it's because people will try to make the wristbands big so they can slip them on and off and use them for multiple people. That never would have occurred to me but it just reminded me that yeah, that kind of thing is everywhere. It's why Target only lets you use self-checkout at certain times now.
Just because there’s a rise in disability awareness doesn’t mean there is a rise 3-fold in the last three years of people who simply can’t wait in queues.
Cheating was going on and was the probably at least 50% of the DAS passes issued. That’s not to say all of these people lied about having illnesses but many were lying about their anxiety or IBS being so crippling they couldn’t still wait in line.