It's not (or not just) that they're getting worse, it's that once the familiarity wears off you can't help but see how psychologically damaging and hostile they are.
Same thing happens to me with TV news. I used to watch them, but now, everytime someone else is watching, I can't help but see how much they manipulate the content to their convenience, and how much they blatantly lie.
This, one billion times. I don't care which network or show you watch, or which newspaper you read, they are all lying. They are all pushing an agenda very clearly.
I mostly make do with Bloomberg, WSJ and NPR. I can't even read the NY Times these days.
Clarification: PBS Newshour is as much (national / international) news as you need in a day, and doesn’t sensationalize.