As usual, the anti-union argument on HN is "The rest of you shouldn't put up lion defenses to protect you because I'm strong enough to fight off a lion and the fences would just get in my way".
Hopefully for you, your luck holds, and you never get ill/weak/sick/unable to fight lions. Like everyone else does eventually.
(Shrug) The site is run by a VC fund, and is intentionally (but increasingly ineffectively) geared towards an audience of people interested in, or actively working on, startup companies. Is this really the best place to sell the whole "dark Satanic mills" schtick?