This thread is somewhat depressing. Depressing because the very nature of YC and HN at its best is optimism. A belief in the ability to build and not just a respect for those who do but a genuine desire to support those trying. Maybe not succeeding, but trying to create something in a world so set on making that difficult. It that always morally perfect: no. Does that always work: no. But, at its best, YC operates more like a university than a venture fund.
Jessica, PG, Geoff, PB, Michael, Jared, Sama and all the other partners have all done very very well by creating/working on YC, but there is a particular underlying ethos of support. Of just a human connection with founders who build. HN in its earliest days had that too, but I don't see any of that on this thread.
The article has a certain ambivalence about the nature of startups themselves (and perhaps, under that, capitalism itself), but Y Combinator has had a profoundly positive effect on my life personally, the lives of hundreds of people I know, the startup and venture ecosystem, and -- whether or not this is "changing the world" -- the economy more broadly.
There are people here who are shitting on the companies YC has helped, in their earliest stages, push forward. Would some of them have succeeded without YC, absolutely. But that doesn't change the fundamental fact that no other small collection of people in history has been instrumental to creating so much enterprise value from scratch -- and thus economic wellbeing more broadly (with, maybe, the exception of Sequoia) other than a few founders of the very biggest tech companies (which YC companies will eventually join the ranks of).
Maybe, you say, that's all just signaling or selection effects. Perhaps you don't learn anything at Harvard or YC; it's just about getting in. Maybe. But when that list includes Airbnb, Doordash, Coinbase, Gitlab, Dropbox, PagerDuty, Stripe, Instacart, Brex, Cruise, Faire, Reddit, Zapier, Gusto, Rippling, Flexport, Segment, Checkr, Webflow, Lob, Opeansea, Sift, Astranis, Twitch, Ironclad, just to mention the ones I can pull off the top of my head, I think it says something about the method, the process, and the support mattering.
And look I'm a founder who didn't succeed with the company I built during YC but that has more to do with my NOT listening to and focusing on the lessons that the partners were trying to impart than any failure on their part.
Now, I'm not without criticisms and suggestions but damn if I'm not rooting for YC and every company in every batch at Alumni Demo Day.