> I know plenty of vegans that, if presented with a situation where it was only PB and bread or other options, they would just say "Eh, well... I can just eat the other stuff for now because this is what there is..."

This makes sense. There is a logical reason to deny vegans food that fits their diet, and if you think about it getting arrested while being a vegan is basically two crimes. Any vegan accused of any crime should be forced to eat meat as a punitive default. The reasoning for this is obvious, for example