What incentive would HN or YC have to do this?

Especially since they are putting out content that argues that you don't even need a business co-founder: https://youtu.be/43RhhwpiSk0?si=NMt8jLFLB9dU0TQ0

Did you actually watch the video because it they are resoundingly saying yes

Also, YCombinator is a venture fund

They are not technical people. Their entire business model is stealing from technologists

I've been using this website for ~15 years now. I've never tried to prove it, but its been obvious for a long time