[FabHK]

Thanks for the considered answer, I might have to rethink my position.

Not denying in the least BTW the lessons of Tenerife/CRM (and I brought up the Saudi 163 example precisely because it challenges PIC authority), just arguing that the devolution of authority should go as far as the crew, but not extend to pax.

As for distinguishing contexts, my argument is that an airplane is not the right place to have that discussion. Say I use my mobile phone, arguing that it is not actually safety relevant, and only a business decision by the airline because they want me to use their expensive credit card sat phone. Then when crew asks me to switch it off, I refuse, and when they ask me to disembark, I refuse, as it's a commercial issue, not safety or ops. It seems like a slippery slope.