Small java programs start up well in the milliseconds.

I don't really think it's fair to compare some old jboss monstrosity doing the job of a whole kubernetes cluster to a dumb hello world server written in go.

Sure, java startup time is and will probably always be worse than putting everything into a single binary - but it is way overblown in many discussions. I have a bunch of Quarkus services on my home server and they start up immediately.