I haven't seen any of the things the Guardian mentions on my feed -- it's mostly startup related, software related, finance news, and science/medical stuff with maybe ~10% of posts I come across having a political tinge (I do not seek out any political discourse in my feed). But this ratio hasn't changed much in the last few years, except that the flavor of political content has moved rightward (it started off pretty left, which I also did not seek out).