I'm fairly sure that most of these frameworks are not direct imitations of what Java did, and there was a back-and-fort co-evolution where standard CRUD web applications can be written in a very very productive way (for the small price of learning a framework).

Sure, reinventing the wheel is fun, but if I can finish a whole project while the equivalent go code can finally return "Hello world", then I'm not sure it's a worthwhile tradeoff. Java is not anemic when it comes to its standard library, people moved to frameworks because a good deal of CRUD apps have to solve some of the same problems. Don't forget, the only silver bullet is reusing existing code.