The act of defining what and isn’t “political” - is itself a political act. It used to be unacceptably “political” in the majority of Anerican businesses to be against racial segregation. Now it’s the other way around. Whether you agree with that change or not, you can’t deny that the boundaries of what is or isn’t acceptable discourse at work have changed over time. When you’re bringing up a topic or opinion at work that makes others uncomfortable, you’re trying to move that boundary, which is a political. When you’re complaining that the topic is “too political” and doesn’t belong in the workplace, you’re trying to keep the boundary where it is, which is also a political act.