“I think these themes/memes come from the top—from the administration—to its pet media mouthpieces— and get copied by the twittering parrots from there.”
Yes, and there are parroting twits HERE.
The thing about parrots is that they don't know any better, or maybe they are trolls, to mix my metaphors. I think at the higher reaches of the media, they are taking orders more than just copying because that's what's in the air.