Always be respectful. But, the complains about errors of others that don't even affect him might be just strategy to cover up (maybe even from himself) his own under-performance and insecurity. Good luck. He sounds like some people I worked with in the past, not as a boss but as a colleague, and it was no pleasure. Down to being sociable and nice at beer.
Btw, the complaining about other people errors from someone like that whose own larger errors are seemingly never addressed can overtime turn the team culture pretty toxic.
Btw, the complaining about other people errors from someone like that whose own larger errors are seemingly never addressed can overtime turn the team culture pretty toxic.