If constitutional rights can be signed away with the stroke of a pen since they are alienable... then a lot of absurdities become possible, such as someone selling themselves into slavery and so on.

Do you know the prominent cases of the examples you mentioned?

> citizens can sign away their right to a trial by jury; it's called binding arbitration

You can contract with another private entity to resolve disputes via arbitration, yes, but not with the state. The closest thing might be a plea agreement, but that happens after an indictment. You still have the right to a trial, but you may forego it if you choose.

I suppose if you're saying that a security clearance is like an NDA with the state, it's a reasonable comparison in function, but the means of prosecution is entirely different. It's like saying that everyone could be subject to UCMJ because of conscription.