I think hand sanitizer is more feasible for practical reasons? Generally in the sorts of spaces where people gather for things like this, there is not a sink near the food. So I'm used to there being hand sanitizer at the beginning of the food line, not because hand sanitizer is great, but because it's inconvenient and time consuming (and overbearing) to ask everyone to shuffle through the restroom to wash their hands before touching the food.
Not to mention that if people touch the bathroom door handle, sink handle, etc. after they washed their hands, they'll get many of the germs they just washed off back onto their hands, whereas with hand sanitizer, all you need do is touch the pump and you're good to go.
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.