Hang on have I suddenly been transported into an alternate reality.
"Over-familiarity" ? Since when has being friends as well as colleagues been unacceptable. I have flown with close friends as an F/O and it was never an issue, in fact it was a positive benefit. Both relaxed and both trusting and more confident of the others abilities than you would be with a stranger.
Yes, a Captain is the final arbiter of all decisions, but having any sort of gap between crews is a bad thing. If an F/O spots a problem, it is their duty to mention their concerns, it is also their duty to take over if the Skipper acts in a dangerous manner.
That is why we have two qualified crew.
Any decent manager will use the knowledge and skills of the whole team, be it CC, F/O, Engineers, Ramp agents etc....... They aren't the "brain of the aircraft" they are the ones responsible.
If you don't like the attitude of a crew member, it is up to the Captain to make it clear. You are the line manager for an F/O on a daily basis.
Maybe the problem is that you aren't tough enough to bring "errant" F/O's into line, or are you simply acting like a dinosaur and grumbling about the "kids of today"?
As for working for Aurigny. I have no idea.