This is big problem in the "new economy" of automation. Some people want "boring" jobs and those are disappearing, some people want "stimulating" jobs and there's not enough of them or at least the threshold is too high to get such jobs.
I'm not saying that Kotlin is bad, but most things are now pretty equal. Java 8 has functional/OO hybrid. It has annotations. It has modern tooling that converts the boiler plat into a few keystrokes.