I wasn't suggesting that the HN software creates an "upvote YC company" rule.
I'm suggesting that it's common for 500+ YC founders who are and have been active HN members, to quickly upvote articles about other YC companies.
I'm suggesting that this is a cultural artifact of what's happening on HN, not an algorithmic one.
And, I'm suggesting that this cultural artifact changes the content on HN to be quite focused on YC companies. It's natural. It's reasonable. And, certainly beneficial to the investment aspect of YC. You run a media site about startups, and you invest in lots of startups. Those startups naturally want their investor to do well, and their brand to succeed.
I'm not accusing you of malice. What I'm saying, is that I think that this cultural artifact benefits YC and it's startups to the detriment of the startup community at large.