I'm sympathetic to this opinion just for worrying about clashing cultural expectations with co-workers. In communicating ideas in a way what may be obvious to me (because of my culture), it might not always obvious to someone else and easy to mis-interpret.

At best, you're never going to change somebody's mind in a political discussion (you can only change people who are not directly participating), and at worst, there's the risk of being raked over the coils by HR or even losing your job.