But I think probably the least shocked people are the YC partners. If you are Paul G./YC, what do you do about this? By far the biggest question that YC must confront as it expands into research, bigger and bigger classes, new types of involvement through fellows, etc., is how to retain their ability to suss out, deal with, or prevent things like these. I think they are fully aware that they can't.
If anyone hasn't figured it out already, YC is becoming the first 21st century university. In order to get there, they have to become significantly bigger, and just like the startups they fund, that's the metric that's on their radar.
I don't think these events are a sign of YC's negligence. Instead, I think YC is slowly transitioning to a new era in the company. Paul G and the gang are incredibly brilliant. They knew the odds when they decided to continue this incredibly rapid growth of batches and outreach. They aren't surprised by these events; they are just moving to a stage where things like this are unfortunately the cost of doing business. If Paul G is cooking dinner for you and your few buddies over the summer every night, you aren't getting away with this. If you are now one of thousands of people fighting for (or trying to avoid) their attention, you certainly can.
Go around to any top school, and you see the same. Out of your couple thousand bright-eyed, brilliant freshmen, there inevitably are a couple bad apples. But none of them would think that a solution to this is to shrink class sizes.