I often don't know what to make of DHH. He's a living contradiction. On one hand he will continually rant about how bad the overhead and waste of cloud services is, and on the other hand he will staunchly defend the most inefficient programming language that is regularly used for backend development, as well as defend the enourmous overfetching that active record leads to.
Really I think DHH just likes to tell others what he likes.
In all fairness, the performance penalty for virtualization is 4x and the penalty for interpreted code is 1.5x. So he comes out ahead, but its more in a broken watch is right twice a day sort of way.
Really I think DHH just likes to tell others what he likes.