Yeah, but why would I use that over PostgreSQL? I already know postgreSQL and it's also THE gold standard for SQL implementations. AFAIAC PostgreSQL is the obvious choice.
If you're not using MySQL in the first place, why would you care?
However, for MySQL in an existing application, the migration costs might make it not worth it. There can be a number of pernicious gotchas that aren't obvious at first. MariaDB is more or less set-and-forget.