I agree with the grandparent comment. And it is because of separation of concerns. You can put it in the same basket as freedom of speech, but it's a bit different.
A browser is a browser. It does not have to promote a moral view. In fact it has to provide ways to find information. Not to limit purposefully ways to find information.
It sounds like your issue is not that the browser is promoting a moral view but rather that it’s promoting one in conflict with the moral view you think it should be promoting.
A browser is a browser. It does not have to promote a moral view. In fact it has to provide ways to find information. Not to limit purposefully ways to find information.