there now seems to be a split - with western companies tryna go all in on PostgreSQL while Eastern (Chinese) companies innovate on MysQL protocol.

MySQL for all its warts seems easier to run operationally and has a better scaling story(Vitess) than PostgreSQL. even though I use PostgreSQL.

PostgreSQL and MariaDB are fully open-source, and non-US companies have had enough of US tech companies.

Assuming what you are seeing is true, I doubt it, MySQL is owned by Oracle so unless Chinese companies living in a cave, I doubt it again, and missed what Oracle has done recently, if you have a business and it is investing into MySQL, your business is set for failure in the near future!

Vitess was made by a... US tech company?

define better scaling