Haha at first, I would have agreed with you. The recent spate of related HN articles drove me to make an account, though, and I'm pleasantly surprised: the attention to detail and smooth user experience stand in stark contrast (for better or for worse) to the "move fast, break things" mantra that has become popular. I'm not saying that this level of quality could not be achieved in much less than a year, but these guys clearly took their time and put some thought into their product. It seems to have worked for them!