Did he say that some where else? I can honestly say I may have been more likely to open it up and check out the site because it's a YC company, but I am 'giving it a chance' because I don't have anything else that does this except scrap paper and issue queues and I liked how you can change what the root node is and the clever use of breadcrumbs.
That, and because it's extremely fast compared to other software. I usually tend to go with less apps, but this could be a nice addition for me. Time will tell.
Most people wouldn't care or even know what YC is.