I think you're ignoring that witch hunting that has been going on in recent years. As a hypothetical, let's say that you believe all homosexuals will go to hell. Of course in a project or a workplace their will never be a need to bring this up and being respectful of others you never bring it up in those environments. But what about other environments? Should you be able to express your belief on your personal twitter? At your church?
The answer lately is that you aren't free to express that opinion anywhere, by doing so you could lose your job or be kicked out of a project. Being respectful to others will not save you, you have to keep your opinion completely to yourself.
Again, I totally do not feel that pressure. (And I tweet perhaps too much about my faith.)
I admit that certain people with public prominence might feel the pressure of public scrutiny, but I have never seen that pressure be aligned in any particular way, whether left vs. right, or religious vs. atheist, or "politically correct" vs. "politically incorrect," or whatever. Every US presidential candidate of every party felt this pressure. Ta-Nehisi Coates wrote about it yesterday (in an aside in his essay about Kanye West). I've seen /r/Catholicism accuse the actual Pope of virtue signaling. If I become a prominent person, I don't think there's anything about my particular beliefs that will make me more of a target of people looking for a reason to knock others down. Maybe they'll find what they're looking for more easily, but they'll look, regardless.
There are certain jobs I wouldn't be well-suited for. My denomination teaches that abortion should be legal, but should also be avoided. If you appointed me as a leader of a pro-legal-abortion group, I'd like to think I'd be honest to the people I represent and as effective as I can, but if you believed I'd be fundamentally compromised because my denomination isn't unequivocally pro-abortion and that there are better candidates, I'd say, yes, you can find better candidates. If I actually believe in the group's mission, I'd like to see the best person in the job, and if I don't, I certainly shouldn't have the job. I'm not qualified for all things, and part of the nature of having beliefs is that they influence your actions and worldview.
But that's about public prominence. The simple fact of the matter is that I feel completely welcome as a random contributor in projects with codes of conduct and among "SJWs," and I openly talk about my religion in casual conversations, and you are the one telling me that I should keep my opinions to myself.
I don't think you realize how precarious your position is when we've had things like opalgate: https://github.com/opal/opal/issues/941 . This person wasn't president, wan't a celebrity, wasn't high profile at all, merely a contributor to an OSS project that had some non-PC views.
> The simple fact of the matter is that I feel completely welcome as a random contributor in projects with codes of conduct and among "SJWs,"
You will be welcome right up to the point where your not, when someone like Coroline takes an interest in your profile and gets you removed from a project. It's also been known to happen in workplaces, low level people with no public prominence being fired for not having social acceptable opinions.
The answer lately is that you aren't free to express that opinion anywhere, by doing so you could lose your job or be kicked out of a project. Being respectful to others will not save you, you have to keep your opinion completely to yourself.