Anecdotal, of course, but .. I've worked with quite a few 10x guys in my time, none of them liked Java, most of them would consider Java a reason to quit. It's been a while, I would guess some of them would find Scala acceptable.
Which language has standard library small enough that people can memorize the whole thing?
My own web projects in java 15 years ago were coded in java and glued by JavaScript (Rhino) with templates in JavaScript, which were compiled into bytecode for speed: fast, secure, simple, 10x faster to code.