[zmmmmm]

JDK21 hasn't even hit general availability yet according to its own schedule [0]. It seems a little impatient to get upset that tooling isn't 100% there before it's even released. Naturally tool vendors aren't going to release their official support until they can test against the final version. This indeed is part of the maturity people do like about the Java ecosystem.

[0] https://openjdk.org/projects/jdk/21/