If a necromancer animates a dead paraplegic as a zombie, are they still disabled?
We don't use that term around here, dear; please remember to say "biologically challenged".
No no no! That is what the ists of the 90s came up with. The new and proper magic word is "displaced minority". Get with the times man.
Ahem.
As for animating disabled dead. Depends on the setting and DM. In some a zombie or skeleton is just a robot animated by magic. They might not have been able to walk in life. But the spell doesnt care. They can now. Same for sight. These things can see even without eyes.
But in another system or DM the undead are bound spirits animating the body and here all bets are off on what they can or cant do. Blind ghost? Can do. Zombie that cant move because in life it couldnt? Can do. Or flip it around such that undeath liberates them from these maladies. For some that could be a powerful lure.
Hell. That could be the motivation for becoming an undead. A mage striving to become a liche because they cant walk. But the liche has no such problem.
This can also work for the living in odd ways. In comics and film theres been examples of people who were wheelchair bound. But their astral forms suffer no such problem. And of course others who are the diametric opposite and carry over their maladies.
As said in the older thread on this. Theres lots of workarounds for being disabled that make far better sense than going into a dungeon in a wheelchair.
Then again I could see someone doing exactly that. Using what looks like a normal wheelchair as a means to make foes underestimate them.
Unfortunately WOTC and their flunkies have no such imagination.