I mean I guess if I saw some proof of these claims I might change my mind, but at the moment it seems totally naive.
edit: Here's an article that discusses it (for the moment I'll just assume their anonymous sources are correct which is a bit ridiculous to assume coming from a rival news source):
https://www.businessinsider.com/bloomberg-reporters-compensa...
> There's nothing wrong with a news story moving the market: It means a story is important.
I think this is really the key. Bloomberg's news is financial in nature. Basically any big story will have a market effect. So basically in this instance "moving the market" might just be equivalent to "being a big story". So if it's bad to give bonuses based upon market-moving stories, it's bad to give bonuses on big stories.
Regardless the whole thing side-steps the important question anyway. Are the articles they post actually true? That's the only thing people should concern themselves with.
They just know people will feel compelled to read their publications if they're consistently affecting the market.