I think it is important to raise a voice against projects that are sexist and transphobic. That is not being impolite. Staying silent is enabling the problem. We need to speak up when we see projects that are problematic for certain populations.
I like this related quote from Christopher Hitchens:
"In an average day, you may be confronted by some species of bullying or bigotry, or some ill-phrased appeal to the general will, or some petty abuse of authority. Everybody devises tactics for such moments; try behaving as if they need not be tolerated and are not inevitable."