Half of me thinks I should make an effort to try to get them to be better at their job.
The other half thinks I CBA especially as management isn't great and I'm only here 3 days a week with a forfilling life outside of work.
I've got the blame several times for something that was their fault, but they didn't bother to read stuff so just publicly pushed all the blame to me. If I was to do the same to him he would throw a strop, so I kinda let it slide and laugh at him. But over time it does get annoying.
He's not great at the job he does, without any previous experience for all he does now. Its a small company that's grown rapidly so all of a sudden he has a team when lots of the people below him are far more skilled, so he's constantly trying to exert authority.