>To make a blanket statement that I'll never sign your NDA ...
Maybe you should actually read what the author wrote. He didn't make a blanket statement. The author refuses to sign an NDA when he is approached for advice about some idea somebody may have. This is perfectly reasonable. Why should he open himself up to liability for giving (free) advice and guidance over coffee?
On the other hand, if he is approached in a more formal setting, such as when he is hired or contracted out by the party, then it would be unreasonable for him to refuse an NDA.
Maybe you should actually read what the author wrote. He didn't make a blanket statement. The author refuses to sign an NDA when he is approached for advice about some idea somebody may have. This is perfectly reasonable. Why should he open himself up to liability for giving (free) advice and guidance over coffee?
On the other hand, if he is approached in a more formal setting, such as when he is hired or contracted out by the party, then it would be unreasonable for him to refuse an NDA.