What is the hardest part to eat on a vegetable? The wheelchair.
I'm not sure what your comment means.  Are you saying that disabled people are the vegetables that you are eating?
I'm saying that we should all just throw them in the trash where they belong
Nobody with a disability ever chose to be in that situation, so it is not right to judge them for it.  Even jokingly suggesting that they are vegetables or worthless is very offensive to people who might know someone who is disabled, so it is best not to make such remarks.