I don’t think it’s as bad as you imagine in west coast faang. I’ve worked at a few of them. When we do talk about politics (offline, in small groups), discussions are nuanced and people have their own opinions. If you’re able to speak respectfully, and not attack people who disagree with you or have lifestyles different from what you’d choose, you would do fine.

If you have an habit of announcing controversial and extreme opinions in widely-subscribed comms channels, you would not do so well.