The YC team, while growing, is still a fairly small collective of amazingly brilliant people. The HN team is, at the end of the day, largely anonymous people on the internet. (Albeit the most amazingly brilliant collective of largely anonymous people on the internet I've ever come across.)
http://techcrunch.com/2011/05/13/lockitron-lets-you-unlock-y...
It would be nice if pg had said something closer to "I hope this new product works as well as the version we are using", but it's difficult to go back and try to figure out the context he would have been commenting in.
The preorder page from that time does paint the picture of a well developed product, making declarations about all the things Lockitron does:
https://web.archive.org/web/20121004125521/https://lockitron...