On Twitter he is basically considered a joke on both sides of the aisle.
He seems to be considered highly reputable by many on both sides of the aisle as well. Certainly more reputable than an hacker news commenter making misleading insinuations as to why somebody might want to delete tweets, and overconfident, baseless proclamations of who is and is not considered a joke by the world at large.
I'd say they are worse than Fox News. Fox News gets a lot wrong, yes, but also everyone knows their entire prime time lineup is opinion...Vox makes no such distinction. If you're pretending to be straight news but you're opinion...that's a big problem to me and worse than misleading commentary that you know is commentary.
I've seen Matt literally copy something straight from MMFA (a liberal news watcher) and Think Progress (a liberal think-tank) and treat it as news...not commentary.
I suppose it’s a bit funny to me that Vox articles often make it to the front page of HN, but FoxNews just don’t. But yea, Vox is worse.