Would you agree that the question isn’t making light of either, though? It’s not making fun of people in either situation.
I would argue that the question makes us pause and consider what difficulties people who are in either category must experience on a daily basis. How often does the average person with legs consider accessibility challenges? How difficult would it be to be illiterate in today’s world? OP’s got us empathizing here and having a healthy discussion. At least that’s how I see it.