The current Ubuntu/Debian LTS installation (2.361.1) includes a startup script under /etc/init.d/jenkins

The function check_arguments() contains a check on the Java version, which doesn't accept the (supported) Java 17. We agree that under native Debian/Ubuntu this is a minor issue, since this startup script is not supposed to be used anymore, but under Windows WSL it is common to start Jenkins still like that (which currently fails without adapting the script for Java 17)