Attacking the person making an argument, and not the argument itself, is a time-honored way of distracting from the weakness of one’s own argument. From Caitlin Johnstone at caitlinjohnstone.com:
If you’re skeptical of western power structures and you’ve ever engaged in online political debate for any length of time, the following has definitely happened to you.
You find yourself going back and forth with one of those high-confidence, low-information establishment types who’s promulgating a dubious mainstream narrative, whether that be about politics, war, Julian Assange, or whatever. At some point they make an assertion which you know to be false–publicly available information invalidates the claim they’re making.
“I’ve got them now!” you think to yourself, if you’re new to this sort of thing. Then you share a link to an article or video which makes a well-sourced, independently verifiable case for the point you are trying to make.
Then, the inevitable happens.
“LMAO! That outlet!” they scoff in response. “