Because if no one reviews the articles then anyone could publish junk. In highly technical fields the only people qualified to tell if something is BS science are the experts in the field, so they review and make sure the article has some merit.
That’s not to say the reviewing process is perfect, but it does at least help to filter some amount of bs.
I think the YouTuber Professor Dave just did some videos about her encouraging science denialism. The podcast Decoding the Gurus has also done an episode on her with similar commentary, “good science communicator but also encourages denialism” is the tldr.