This is like a scavenger hunt.
I've looked up MariaDB MaxScale ... and found an optional / add-on product that is aimed at Enterprises, seems to require an Enterprise support licence for the Enterprise edition of MariaDB ... and I completely fail to see how any of this demonstrates that the 'MariaDB story is a bit of a fuck you'.
Basically - their formerly GPL proxy for doing HA deployments is suddenly not open source.
They can of course make this decision - it's their code to do with as they wish. But it's quite fucking rich for Monty to claim Oracle will close source MySQL, create a fork and company which then uses that fear to grow in popularity, only to do the very thing he accused oracle of doing: closing an open source product.
Edit:
Also, if you think only "enterprise" customers need database clusters that survive individual node's being offline, you're in for a big shock.