Yet his readers will form an opinion, and you bet that's gonna be their opinion til kingdom come.
No. Most readers will soon forget whatever they read.
There's also hostile media bias. It's natural to consider neutral articles as biased against oneselves.
But the consequentialist in me is pissed off
I don't think there a reason to be. The saying that there's no such thing as bad PR exist for a reason.
I would except LW/MIRI to be antifragile to most mainstream media criticism. Especially to articles that tell a story of how LW is strange and important.
Don't underestimate the Harper's readership. If any one of those encounters the subject again, they're prone to remember "haha, yea I read about those, something about a guy who can't control his face or something?", have a good laugh and move on. That kind of stuff is much more salient than some cursory pointers at some arguments, mostly with a one sentence "debunking" following.
The author has snuck in so many "these people are crazy", "these people actually don't have a clue" and "these people are full of them...
Cover title: “Power and paranoia in Silicon Valley”; article title: “Come with us if you want to live: Among the apocalyptic libertarians of Silicon Valley” (mirrors: 1, 2, 3), by Sam Frank; Harper’s Magazine, January 2015, pg26-36 (~8500 words). The beginning/ending are focused on Ethereum and Vitalik Buterin, so I'll excerpt the LW/MIRI/CFAR-focused middle:
Pointer thanks to /u/Vulture.