You can say any of those things in Silicon Valley.
I mean, people might make some judgments about you. But that happens whenever you state any opinion, especially if it isn't the mainstream.
I think a lot of people are used to saying what's on their mind without consequence. They're used to other types of people remaining quiet on certain topics -- especially topics related to race, gender, and sexuality. And that's changing.
So: For some people it's a shock and they suddenly feel attacked from all sides for opinions they've been vocal about for years. Feels weird. But in many cases what's actually happening is people who have historically been silent are suddenly speaking up and offering their own differing opinions.
For example, it used to be acceptable to behave in certain ways towards women. Some men didn't see the problem because women wouldn't or couldn't speak up to make their opinions known. Now many women feel more empowered and it turns out many attitudes men have about women that seemed mainstream are in fact controversial (or, worse, actually destructive). And they always were. The opposing voices just hadn't been speaking. Now they are.