I don't totally understand why guilt is a feeling among our community either but if anyone feels it I'd imagine like in my case it's related to upbringing most likely.
I've had better experiences at UMHS at CS Mott as a patient and a nursing student and I know we have diapers at Mott not sure about the university hospital though. Sorry you had to go through that
Being incontinent I can pretty much poop my diaper in any position but when I'm in baby mode I like to hide behind a chair and squat down just like when I was a 'real' baby