"If you were a surgeon would you want your wife/son/daughter/mistress/mate/husband in the operating theatre? "
Bit of a difference between a cockpit and a sterile environment designed for the health and well being of sick patients.
I would love to hear your opinion if you required a J/S for either yourself or a family member and a colleague had the same attitude as you. It's very easy to tell J/S Pax to sit down, shut up, and only speak when spoken to. Have done it, and have had it done to me.