I'd say the same thing about journalists. 90%+ of journalists are democrats. (Overwhelmingly, white and male democrats.) They try to chart a course of "objectivity" within an overall left-leaning Overton window. For example, 32% of Democrats are "extremely proud to be an American" versus 74% of Republicans: https://news.gallup.com/poll/236420/record-low-extremely-pro.... It is impossible for such differences in world view not to affect your article selection and tone when it comes to areas like foreign policy, terrorism, national security, etc.
I should point out that I'm not talking about blatant partisanship. Judges, for example, seek to be objective. That doesn't mean that their world views don't affect their decisions. Justice Kagan has said that American judges--across the spectrum--are textualists most of the time. How would they approach deciding a Constitutional case in the U.K., which doesn't have a written constitution? Policymaking and reporting are no different. Everything you write that has any substance at all must have an internal logic. It will makes assumptions, and inferences about cause and effect. It is impossible to be "objective" with respect to that reasoning process or those assumptions.
For example, what is an "objective" article on AOC's new proposal for nationwide rent control? Do you think someone who believes deeply in markets would write the same article on that proposal as someone who believes that governments can legislate outcomes? I think a market-oriented person struggling to write an objective article about that proposal would either come across as partisan, or would have to write something utterly vacuous. It's one thing not to expressly take sides. It's entirely another to divorce yourself from your own modes of reasoning and assumptions about how the world works.