Being able to chose who you associate with and who you do not associate is usually part and parcel with free speech.
I'd agree with you about the NDA bit. Using courts to enforce seems anti-free speech
However the milder version of it, where if someone violates the rule they aren't invited back, hardly seems like a free speech issue. Free speech doesn't mean you have to stay friends with someone who told your secrets to a third party. Free speech means you can say whatever you want, but it also means you can not talk to whomever you want.
I'd agree with you about the NDA bit. Using courts to enforce seems anti-free speech
However the milder version of it, where if someone violates the rule they aren't invited back, hardly seems like a free speech issue. Free speech doesn't mean you have to stay friends with someone who told your secrets to a third party. Free speech means you can say whatever you want, but it also means you can not talk to whomever you want.