The main problem with JavaEE is hardly the development part. It's the maintenance and support part. When relatively inexperienced programmers write complex app

The main problem with JavaEE is hardly the development part. It's the maintenance and support part. When relatively inexperienced programmers write complex applications (because it makes this easy) and then something goes "wrong" in this pyramid of abstractions and layers and layers of libraries / frameworks interacting with one another and the application servers. That is when it gets interesting. Yeah there are great production performance monitoring tools like Dynatrace but it's not a silver bullet.