They have the not all disabilities get out for that one, I have my own radar key but in the pubs I use most I get the key from behind the bar so no one else can use it while I am using the facilities. I have found a so called disabled toilet with a normal height toilet and no rails, so for me not exactly user friendly... When I questioned it they said it's big enough so you can have someone in there with you to help you... No I want to be independent.
Also found them with only a wheelchair height sink, can't bend that far without pain, I carry cleansing wipes and sanitizer when I am away from home, not ideal but better than risking an embarrassing 'lock up'
Shopping centre ones are often worse as they often double as baby change, and sometime they are even used as a baby feeding space. Get behind a couple of mums with babies and it could be twenty minutes with crossed legs.