> That is a very, very, very different statement than "I'm calling the FBI."

Yes, but on an aircraft the captain is the dictator. They can do basically whatever they want within the confines of law and company policy - and honestly with enough seniority, which the captain on a transatlantic flight has a lot of - they can probably ignore company policy once or twice and get away with it and keep their job.

As far as I'm aware there is no law preventing the captain from deciding to go back because they don't like one of the passengers blasting their opinions to the entire aircraft. What the opinion is, its levels of subjectivity or objectivity, and whether or not it's popular is completely irrelevant.

I think if the captain doesn’t like you, what they say goes & it’s a federal matter.

I think the reason for the captain not liking you is secondary and could get him fired but it’s still: mess around in federal airspace, deal with the feds. Follow all instructions of all flight crew or you’re a criminal, regardless (I think).

Not actually the FBI though is it? Captain probably wanted to sound serious (mission accomplished).

I don't know what the right answer is to people doing weird stuff in enclosed places with a captive audience is.

The wifi name probably should have been ignored. But the incidents of people airdropping profane pictures to randos on planes...

You are actually giving away liberties when boarding a plane and I'm pretty sure this is even written somewhere in the contract between you and the airline that you agreed on.