I see quotation marks put around words all the time to indicate that people disagree that a thing is what it actually fecking well is. It drives me up the wall.
For example: 'This 'doctor' should be struck off!'
The doctor in question is a doctor, it doesn't matter that you disagree with them, the scare quotes are wrong wrong wrong. Arrrrrrgh.
IABU, aren't I? For some reason it disproportionately annoys me.