That's the thing though---given the interface of the law to the question, there are right and wrong things to say and do if one wishes to keep one's job. Paul Graham wrote an essay about "What you can't say" related to this topic (http://www.paulgraham.com/say.html); he doesn't say anywhere in the essay that people who say the things you can't say don't suffer consequences. And the NLRB has made pretty clear that in Damore's case, he crossed a line.

We have an entire world of academia to debate issues that the private sector can't touch.