Don't you think it's kind of inappropriate to respond to a serious accusation with a marketing statement about the technical architecture of your site?
I mean, sure, before reading this I thought Etsy was cool because of the continuous deployment thing, but now I think two things:
1. perhaps continuous deployment leads to launching features without thinking about their consequences for long enough; 2. Etsy's team is more interested in thumping its chest about continuous deployment than owning up to a serious mistake.