Yeah that’s bullshit. There isn’t some secret cabal that’s in charge of US journalism anymore than there is in the UK. What really happens is that because the old news-media business models have been utterly destroyed by the Internet, there’s a giant and never-ending competition for audience and everyone knows that sensationalism sells.
You have a similar problem in the UK but it’s not as pronounced because the BBC is government funded and even though it’s far from perfect, it does set a kind of baseline. Your other big news organizations are just as bad as in the US though. Your tabloids are actually a lot worse than ours, which is saying something.