Over all I think Its bad. Eventually the fact that the goals of yc aren't aligned with hn will be revealed. Then every one will disperse.
More than that, in YC's business model the cost of running HN probably doesn't even amount to rounding error. Until recently the website was running on a single server [it may still be, since I haven't heard otherwise since the infrastructure change to Cloudflare] and with PG himself handling a significant portion of the maintenance and coding. In other words, the financial side of a business like YC is incompatible with most people's experience in offices - it's not about profits from sales. It's about internal rates of return on working capital.
Let's not give up before the match is lost.