99% of the people I see using them are just fat.
I honestly can’t even remember the last time I saw an OLD person use one of those.
Most self-respecting people who may have mobility problems will avoid using those carts as far as possible, so as not to be associated with the freaks who do.
It wouldn’t surprise me if liberals found a way to shock people if they put twinkies or other snacks they don’t like in their carts.