The charity has limited funds and have to help as many people as they can. So the choice of vehicle may well be limited to what they consider suitable to keep you mobile and meet your needs (not your wants). Of course, you may want bigger and better but that, in the charities eyes, counts for nothing.
Is this a new thing, no, I don’t think it is.
Best of luck with your search and I hope you find something suitable.
Skoda Enyaq Race Blue