I think you’re maybe reading too much into it… pretty sure it was just intended to be a hypothetical for discussion, not an attempt to learn about disabilities. It’s like, “Would you rather have unlimited money but be perpetually depressed, or always be happy but be perpetually broke?”
If someone who actually has no legs came in and offered their opinion, that’d be a bonus, but it doesn’t strike me as the intended purpose of the post.
If there’s anyone here who actually has no legs who is offended by this, I’d be interested to hear from them, but… if you have legs (because you’re clearly literate), are you sure you’re not just taking offense by proxy where none should exist or was intended?