The AdoptOpenJDK community (a consortium of vendors and users that produce business ready OpenJDK binaries) will work with the Debian maintainers to course correct this going forwards. If you’d like to get involved see https://AdoptOpenJDK.net
I'm still astounded how much of an (intentional?) mess Oracle have made of Java and OpenJDK. If you search for Java you get to a Oracle page with a big download button and a cryptic yellow warning about license changes, with a little link at the bottom directing people to OpenJDK. The official OpenJDK builds they send people to have no Windows installer - they're just a ZIP of the JDK. There is no way for an ordinary…
Also, complicating things a bit if you want a traditional shared Java installation, AdoptOpenJDK has apparently been refused a license for the test suite, making it not quite properly offical Java.