Slow news day. YC has made it clear over the years it's almost all about the founders not the idea. It's almost impossible to know if an idea is good at the early stages, and ideas change, startups pivot, often the timing is wrong, and the market unproven etc. More often than not most of what startups do is not unique, otherwise there's no market for it. A new take on an old idea has a much higher chance of success than something totally new that ends up being too early.