It is a self fulfilling condition.
If X thinks he can do whatever he likes and then announce that he got OCD to get away with it.
This is basically a spoilt brat who was never taught how to behave.
Somewhere along the line, he has learned to use OCD as a ready made excuse every time he misbehaves.
He thinks he is smart.
Actually he is digging his own grave and the hole gets deeper. He will end up being ostracised by society and family. He will have no friends.
Most will find him repulsive. Some will think he is outright psycho-case.