That's a random journalist, what the hell does he have to do with the democratic party and "the left"?
Because to them people on Twitter and the DNC are the same thing.
Another ad hominem attack vs addressing substance
What substance? Random people's opinions online are not representative of whole political parties or movements or groups of people....
Hell, pro-Trump people were crying foul when the words of an opening act for Trump were associated with Trump and friends (that Puerto Rico is an island of garbage), this is infinitely more unrelated.