This is akin to the idea that you don't need privacy unless you have something to hide. Freedom of speech is important, but at the same time, so is the responsibility of a person to his team and community to maintain a minimum level of politeness and empathy. That entails understanding that some people are affected by some political issues significantly more than others, and that it might be intimately tied to their working situation.

A person's privilege to speak out about issues facing them in the course of their work is to be protected, irrespective of it being offensive.

What happens when people start taking offense at opposition to affirmative action? Or take offense at disapproving of putting biological males with male genitalia that self identity women in women's prisons? And conversely, plenty of conservatives take offense at gay marriage. Whose offence counts?

Isn't that the case here? A company is suppressing all speech about politics?