Comment by qualeed

He refused the exit package so that he had the option of talking about his experience at the company. It's not like he is compelled to.

Maybe he talked about it plenty in private conversations immediately afterwards, or semi-publicly throughout the years, and you just haven't been privy to those conversations.

Some people, on principle alone, will refuse to sign these sorts of NDAs even if they never plan to talk, simply so they have the ability to do so if they want to in the future.