It absolutely is a partisanship problem, and you're just echoing a partisan line. If you look at it from outside the bubbles, it's clear that both sides have lost their minds, and MSNBC and CNN are just as bad as Fox News. Arguably even worse in effect, because unlike Fox, their propaganda is still taken seriously by the rest of the media, most of tech, most of the government and academia. They have far more institutional power.