Completely agreed. Sorry, other folks, but you have no right to gatekeep my speech in any way in a professional context. Are you a family member? Then sure, we can have a discussion. Am I a member of your private club or otherwise dependent on your approval of my thoughts or beliefs? Then let's talk. Otherwise, leave me alone. You (the collective you) don't get to decide what I am and am not allowed to think and believe.
Nobody is constraining your beliefs or expressions of them. People are exercising their own individual right not to associate with people who express certain beliefs.
