The senior people and the ethics in the industry are close to zero. The environment is soul-less.
Let's not forget the disgrace wrt Kintyre and the Chinook!
Otherwise I think you're getting generally 100% accurate advice. The LHS / RHS thing is more important than you may at first believe though, particularly if you are used to being an aircraft commander. I know several very unhappy previous FJ and Truckie mates who joined BA or the similar seniority-formal airlines; not all civil aviation captains are either civil or as well professionally qualified and able as you are. I have no problem believing it can get very tiresome.....hence the rationale to choose carefully.