They name it in the first sentence, and at least for me, given it's longevity and word of mouth I know what Joe Rogan implies, but if you said "MeidasTouch" in the headline, I'd have no idea the implication of that shift, since I haven't listened to either of the two.
If they just put the name I would have no idea who they are. Writing the full name plus ",an anti-Trump podcast" would be a really long title with extra info they get in the first sentence.
Wanting to stop at the headline is a bad habit. Just click the article and complain if the name isn't right there.
Be that as it may, we know that the majority of readers wouldn't read past the title. Knowing this, NewsWeek still decided to not include the name of the anti-trump podcast which dethroned Joe Rogan's podcast. I think this is the bias that they are referring to.
Per the other comment, headlines. Internet dwellers read the headline to decide whether or not to read something. You can think of a headline as involuntary information injection.
So Newsweek wants everyone to see Joe Rogan's name but not MeidasTouch.