yes, we have to prove we have insurance in order to drive. But not every time we get into the car. etc.
Re Burden of proof - from your OP my belief is that you were claiming a trend. Not just for that day in that park or in your iimmediate vicinity, but ‘general’, as in the title of this thread - “growing use of mobility devices” not “growing use of mobility devices in this one theme park”. That’s why I still maintain that you have the burden of proof. Now, if you’re instead claiming that only in your immediate vicinity, and only on the days you’re there, fine. but that shouldn’t cause a rethinking of policy on a generalized basis, (which still seems to be what you’re doing)
You still need to prove that you, your family etc are in danger from those people who use carts w/o medical necessity - since you admit that some people will need them no matter what else, and some documentation of injuries from them would go quite a ways to support your contention that there’s any realistic danger - come on, I know you know how to do research and you think folks need to prove all sorts of things, prove what level of danger there is from those carts, that it’s significant, and significant enough to require people who are already burdened by disability and the pain etc from that, to continue to have to prove day in and day out to all the cart dweebs across the US that, yes, Virginia, they do have a disability and they need one of those carts.
Another problem w/your ‘system’ is that observable (but perhaps temporary) conditions would not qualify, so if you fell in the parking lot, causing a bowling ball sized bruise on your ankle, you would not be allowed to use a cart to get way back to the back of the store to select the cane you wanted to buy to help you walk.
nor would the person who’s purse had just been stolen, nor would the person who lost their card, etc etc etc. they’d just be shit out of luck. sucks to be you. life’s not fair and all that.
re: your other examples -
the senior discount isn’t something the person needs, but is something they’re entitled to. Ditto student discount. (they may ‘need’ it in order to afford it, but that’s not the same thing)
the ticket - all people have to prove they’ve paid. Now, if you decided that only people who ‘looked like that couldn’t afford the ticket’ would have to prove that they paid, you’d come closer to what you’re proposing.
RE: what you are claiming as ‘cheap shots’. I have sensed from you (especially in this thread) a judgemental tone, you admit there is one. The people you selected to describe in your OP for example. You claim that you can seperate your personal disdain for out of shape folks from those who’ve been doctor certified as having a disability, but you see, that’s where I’m having the problem with your stance.
for the only way for you to know that they’ve been certified as having a disability is for them to demonstrate the proof to you in some fashion (either directly or through a card shown to the cart geek).
and some one else’s medical records/ conditions aren’t remotely your business at all.
Now, I may believe that you have a rationale for requiring that if you could demonstrate to me that there’s any real documented danger from people using handicapper scooters in the real world. Not, ‘I saw this guy careening around one day’, but real world data. We can discuss the relative safety and reasons for licensing for driving on public roads 'cause we have data to demonstrate that, for example, drunks are involved in significantly higher proportion of accidents causing injuries.
But, from a preliminary search for ‘scooter related injuries’, the closest I got was a number (something like 300,000 nationwide over the course of a couple of years), but those were not from handicapper scooters, but those ‘razor’ scooters that were popular a few years back. which leads me to believe that injuries from these things are so rare they don’t even collect the data.
which would mean your ‘risk’ approaches nil. which would mean that even dramatically increasing your risk (which I don’t believe that you’ve demonstrated is happening), 40 times nil, is still pretty insignificant (I will of course, grant you, that if the person injured is your child, you won’t care what the relative risk is. HOwever, when you’re demanding concessions and actions from thousands of other people, you better be able to demonstrate a significant risk).