This points at a bigger issue, to be honest: it seems MongoDB is popular purely because of marketing and intentional hype. Evidence for those claims that Mongo

This points at a bigger issue, to be honest: it seems MongoDB is popular purely because of marketing and intentional hype. Evidence for those claims that MongoDB is "fast" never materialized, nobody really knew where the claim came from, yet it was constantly repeated. They sponsor a lot of hackathons, and so on.