hmm?
I've only every seen people using MySQL at scale if they started with MySQL in prototype and never had the energy to migrate.
https://eng.uber.com/mysql-migration/
And there are tons more. In fact here is a tool to help you do it
https://github.com/pivotal-cf/pg2mysql
Lots of people do dumb things for dumb reasons.
Most developers I interact with, even the really good ones, are profoundly stupid when it comes to databases.
hmm?
I've only every seen people using MySQL at scale if they started with MySQL in prototype and never had the energy to migrate.