While I agree that things are less necessary in a modern language, I disagree that Java is "unconstrained." This is especially false when one considers that the "entry point" to your code is more dependent on how the framework you are using calls it.

It gets laughable when you have codebases that have "gone all in (functional|object oriented|any other style)" where they seem to mistake the style for the goal, which should be to solve a problem. (I say this as someone that is pretty sure I have made those mistakes.)