That's actually why this is great. There are low-value startups out there because naive people start companies that aren't good ideas. Meanwhile, great founders realize their ideas aren't that good and don't build companies. YC is going to find those people, help them curate their ideas, and get them on their way to building meaningful companies. It's as far from predatory as you can get. It's giving great people the tools, resources and support they need to do big things.