Native compilation which is fast enough, green threads, AST and analysis framework, in-built testing and profiling, call graphs, rewrite tooling (go fix), go.work and modules which are far better than maven / gradle mess. There's a good amount of rigour applied to Go tooling that it "just works", even as horrendous the language is.

I agree java is good too, except spring boot manages to undo all the engineering that has gone to Java.