Although I do agree with him.
A good friend of mine works in a warehouse. He's worked there years and gets on with most of the other guys. One of the guys had an important job to do with money. Friend liked this guy who was good at his job and friendly etc...
So, turns out the guy's been fiddling, buying computer games on mass instead of paying his mortgage, then started 'borrowing' cash from work. He's totalled around 15k. He got found out and was sacked.
The AIBU question is ...there was a wip round for the guy. Friend refused to put into it and was called a tight arse by some workmates. I think he did right. If everyone dipped in then there'd be no jobs for the others.