[dahauns]

>They implemented a very boring transaction/caching/replication layer that is like any other DB except they borrowed the idea that "longest chain" should be used for conflict resolution.

Handwaving this layer away as "very boring" isn't exactly fair, either. What does boring even mean here? I mean, this layer solves problems that are both essential to performance scaling of RDBMS and have been proven time and again to be hard to reliably solve in a general case. And it has furthermore been built from the ground up tailored towards the specific needs/use cases of the company.

By the aforementioned handwaving the presented successes are implicitly attributed to SQLite to a degree that isn't justified IMO.