[mathw]

It's the filtering which conforms to the wishes of the newspaper's editor, rather than the personal tracking profile of the individual reader. Hence why the various newspapers have known political positions - because their editors in the past put them there, and their readership now expect it.

[Ntrails]

Which is why you aimed to get in the position of reading a couple of news sources of different known biases. That's the old school counter to stuff being filtered