I get the sense that the people who think these out are smart and deliberate. I like deliberate.
And there's more coming. Value classes (custom, compound primitives is my understanding) is only one example. The fact that that document even exists is exciting to me. I like reading the instruction manuals for my tools!
The standardized documentation, the culture, the tools, the libraries. After stumbling around C++ all of that was a breath of fresh air. Java is a joy for me. I've been doing it since the 1.1, 1.2 days.
And so y'all know, right now I'm being paid to write Kotlin. I fully intend to integrate its styles and idioms. I get why people like it. Every now and then I do go, "Huh. That's neat." I'd still pick Java over it if I were given a choice. But I gotta pay the bills.