I never heard a bad word about Bo from line pilots until this thread, only good things. When most pilots say good things, that is generally very good. I don't know the man personally, and have never worked with, or under him.
I also don't know the current chief pilot from the black team, or heard anything about him one way or the other.
Until Attarian, lUAL chief pilots were United pilots. For the most part they stood up for their minions. That probably precipitated hiring an outsider.
Attarian is an ALPA hack-insider. This should show everyone who ALPA leadership is really working for. Themselves.
My two cents.