Not everyone watches Fox News, but everyone lives in an America where 24/7 bashing of Dems by Fox News invades into the cultural zeitgeist. To some extent, it really doesn’t matter who wins the Dem nomination – the Dem nominee will be vilified and hated by at least 49% of Americans by the time the election gets here. (That 49% includes your nice but dumb in-laws who really have no critical thinking skills to speak of.)
This should come as no big to surprise to anyone. It is what they do.