I'd fire someone for using Oracle. I'd put it in the employee handbook.
I bet Oxide would too.
Oracle products (including VirtualBox and MySQL) are banned in our workplace as well. We do not want to deal with licensing nightmares because someone accidentally downloaded the JDK or the E1000 drivers for VBox.
I would too and I have declined jobs everywhere they used their tech and it was not because they had to. And even then, unless it’s like Google and such I am very reluctant.