That company had few load-bearing CentOS 6 machines that barely anyone knew how to operate (as in "where are the SSH keys, passwords, where shit is stored on them") and docs were in disarray.

The replacement project for remaining CentOS 6 machines was going glacially, but at least didn't endanger compliance. The replacement project for CentOS 7 got sabotaged by management, few people got run out of the company, last I heard the replacement project for the replacement project was going to just end up with few multimillion cheques to OpenLogic so that certain big fat client group doesn't drop them like hot potato on EOL day.

I wouldn't use the word "regularity", but the pleasure of debugging a long standing issue on a RHEL 5 machine came up in December.

had to compile git and tcpdump from source.

all in all, a pleasant experience. vi is the same.