[zero_intp]

it is extremely possible to sign away one's free speech; this is the heart of a non-disclosure agreement.

[mrweasel]

No, that says: If you choose to exercise your free speech on this one particular area, then the consequence will be severe. The result will be that most people would opt to follow the NDA, but you're still allow to say whatever you want.

[mijamo]

In North Korea as well you are free to say what you want, the consequences are just severe as well in some particular areas.