> Should there by attribution for Google or Stack Overflow copy/paste?

Obviously, and I'm a bit taken aback that anyone thinks otherwise.

You are absolutely 100% wrong about this. It is entirely possible in the US to enter into contracts that limit your rights, including freedom of speech. People do this routinely, and it is enforceable.

The reason you can't give away your kidney in an employment contract is because there is a specific law banning that: the National Organ Transplant Act of 1984, which bans transferring a human organ in exchange for valuable consideration.

> It is something you innately have.

That is nonsense. "Freedoms" and "rights" are inherently social constructs. What does it even mean to say you "innately have" freedom of speech? That is a borderline religious claim, like saying you innately have a soul.

It is perfectly legal to sell tickets to an event and require people going there not to express political opinions.

> No contract is allowed to take away what the law gives you.

That's incorrect. In fact this is exactly what all contracts do.

All contracts take away rights that the law explicitly guarantees you? Such confidence. Sometimes talking to an LLM is an improvement...

Of course. For example, the law guarantees that I don't have to perform labor for someone else if I don't want to. An employment contract obligates me to.

Similarly, it's entirely possible to enter into a contract limiting your freedom of speech.

The entire point of a contract is to promise to do, or not to do, something that you could have freely chosen to do or not to do under the law without any contract.

Pretty sure you are mistaken. Look up public policy violations. Typically you can't negotiate away rights

No. It’s not illegal to express that opinion (or any opinion) in public in the US in any normal scenario. I’m not sure to what extent the law is different on planes, but you can go outside on the street and yell “free Palestine, F Zionists” to your heart’s content and you will not have broken any laws.

If you genuinely fear for the lives of everyone on board, who gives a shit about logistics?

I guess you can infer how they weighted the two concerns

It was standard practice during the Troubles in Northern Ireland, for example.

Without testing the null hypothesis that is not possible to determine. There doesn’t have to be an actual bomb for an unruly passenger to inflict injuries or death.

It's colloquially used like that in the blackjack community. "Being trespassed" by a casino means the casino informs you that you must leave and that if you return, you will be guilty of trespassing.