I couldn't disagree with this any harder. I'm a Java BE Engineer who joined a Go shop, so I have a direct comparison. Both are microservice environments for products of similar complexity. It is insane to me how much less productive Go is for your average microservice enterprise environment. I'm sure it's great for systems programming or tool development. I like the simplicity. But the ecosystem is borderline useless…
gRPC and protobuf are just transport and serialization, they have nothing to do with business logic, on the other hand Spring is a heavy, bloated framework.
Most Java frameworks are complicated backed by layers of abstraction and black magic.
btw no framework does not mean you don't use any library, there are some good lib aka micro framework that have everything you need to build modern and decent api servers.