it doesn't follow. The article posits that "many people think twitter headcount was bloated" then proceeds to describe a (presumably) really efficient work of a small SRE team. These two parts seem completely disconnected from each other - neither one proves, disproves or follows from the other - so it's unclear why the former was mentioned at all.
His personal experience was zero bloat. He was one deep in a critical function for the company. He isn't saying this proves without a doubt that there is no bloat, but he didn't see any in his time there. It's seems like a reasonable addition to the conversation to me.
It's a shame that most the conversation going on here are extrapolated arguments based on this article and another anecdotes. The problem starts when the ones making their points let beliefs on "how things should be" stronger instead of "how they really were".
