I'm not sure why anyone would believe fraud is the only issue here. What percentage of park goers can be given basically unlimited use of the LL for free due to a disability before it would be legitimate users causing the issue? 5%? 10%? 20%? Then realize those people might on average have around 4 people with them, meaning we're looking at at least double the % of disabled users getting into that line.
There are two things, which have come up repeatedly through this thread that make your comments incomplete. One is that the number of people with disabilities (legit ones that would qualify for some level of assistance) keeps rising. Close to 3% of kids have ASD, 9% ADHD, over 4% considered fully disabled on census (which will have some ASD overlap, but much of that is other disabilities) up to 16% have a sensory disorder, IBD has more than doubled, It's actually really easy to put together that easily a good 1/5 people in the parks could ask for DAS and if diagnosis alone passed as reasoning most people walking around would have access through their own or a condition of a person in their party. We aren't talking about 1% of the population, we're talking about something that is bordering on common. Then add in physical handicap- which would be ON TOP of all of this.
The other part, which you seem to be glossing over - if someone's ONLY disability was that they were in a wheelchair, they weren't supposed to be getting DAS before now, so this isn't a change. I'm sure plenty of people ended up with it because they either demanded or ran into a CM who didn't want to argue. Me stating this is not accusing anyone of doing anything wrong, but they made the line accessible so there wasn't a need being met by DAS, it was just a perk. (crappy trade I'm certain, and this doesn't apply to people when there is something beyond the stuck in a chair situation going on)
It's not just fraud, legitimate usage was too high. That doesn't change because people's feelings are hurt. Yes, taking away free FP made some people realize they needed an accommodation they may have been able to sort of patch together by themselves under the former system, but one person having used it before doesn't make them somehow "more special" and "more deserving" than the person who didn't know it was there. When my youngest was a toddler we were told he would never walk. We didn't know stroller as a wheelchair existed. I had a 2 year old I had to carry through every line, who couldn't even sit up by himself. At 3 he surprised us all and his muscles started working. I'm sure there's a family out there with a similar story- but knew about stroller as wheelchair - that doesn't make them NOW more entitled to it than we are just because they had it before. If we have the same needs, we should be accommodated in a way that meets those needs regardless of past visits.
So there need to be alternate accommodations. The solution to "anything at all doesn't work right in my body" can't be unlimited LL. Hence redoing queues so chairs can go through, and telling people to leave and return to the line. This covers a very large chuck of the disabled community. If someone's needs are met through other means, they don't need the DAS just because they got one before. Nobody is entitled to it only because they knew about it first.