> It's fine for a project to have moral/ideological leanings

As long as they align with the correct (i.e. yours) values, of course. When they adopt the wrong values, it's not fine.

There's still a line between values I disagree with and values that directly attack me as a person. The former is how many of us feel about some of our dependencies and most proprietary software we use, so it's clearly fine to some degree.

But it is fine. If I disagree with a project's values I'm not going to contribute to it, and they wouldn't want me there either.