Please don't cross into personal attack, no matter how strongly you disagree with someone, and please don't extend ideological flamewars (or other flamewars) on HN. It's not what this site is for, and destroys what it is for.

https://news.ycombinator.com/newsguidelines.html

Or he's quite capable of negotiating his own salary.

I personally agree; I don't want a unionized job. It doesn't work for me.

It's a net benefit on average, but I'm an aggressive negotiator, and I out-earn my industry, and I know how to squeeze big bonuses out of my employers. So a union would have a negative effect on my ability to earn.