As a long time observer/participant in internet pilot forums, let me say this: unless you meet the guy in ground school, you NEVER know who you are talking to so you read the postings and make your assessments accordingly. If OC looks like an AB guy, it's because he posts things that appear to be slanted in AB's direction. No crime in that.
Don't judge me by my profession of being a line pilot, judge me by the content of my postings. I do the same and I don't have to bother my little brain wondering who works for who.