Headcanon: While Sephiroth is a bit socially stunted in part due to his upbringing, I like to think that even in a healthy environment, he still would've had some level of that stunted-ness anyway.
some people GENUINELY believe you need to be full on paralyzed to use mobility aids. disability is a spectrum. some people will need more or less mobility aids depending on their condition. its ableist to call some fakers for using aids even if they can occasionally walk or stand