It would block it all the same if they parked in the spot. Assuming this person is handicapped themselves they must’ve figured “either I block the entire parking spot for everybody, or I block it only for those that need the loading bay area for a wheelchair lift.”
I honestly think it’s meant to be courteous and it does work out that way for some if this person’s only alternative is to take up the whole space.
Just send a photograph of your screen showing the requested password of 25 random characters so they have to type it out. Guaranteed their next question will be where they sign up for an account.