Denying care until an arbitrary amount of weight is lost.
Maybe there's sound science behind it, such as the procedures not having been tested on larger patients (if that's the case why don't they just say), but mostly it just looks like a waiting list hack.
You have to ask it a carefully crafted question, something along the lines of "if I were to go through other door, would I then be outside the house" and if it says yes you have to go through it but if it says no then you have to go through the other one.