I don't think Trumps feud is responsible, it has just made it more overt for all to see.  Most journalists at least attempted to feign neutrality in reporting, now they just come out and show the bias.  Maybe it is due to some of the DNC leaks and admitted double dealing by Andy Rhodes and his echo chamber that have made it OK to be overt, or that Trump treats many with such disrespect.  Either way, it is a failure.  By taking sides, either side, all they do is allow for fake news to be believed by those on the other side.