Anyone who does complain about the methods in the ME should have a good hard think about it.
There is nothing wrong with Saudis chopping off arms or public executions in Iran if the result of breaking laws which come with this penalty. Presumably the perpetrators knew that going in and thought what they were going to do to some innocent was worth the risk.
They have the same right to impose penalties that we do. What we personally feel about it is beside the point.
if Iran does it to the innocent then that is wrong, but that's a separate issue.
As for being a paraplegic that is irrelevant unless you think disability gives someone a right to commit crimes without consequences.
I doubt anyone in this country who has a disability would claim immunity on those grounds.