Being able to find jobs in a specic technology is a very regional thing, given the market size.

The links I posted, and others I can reach out for, support my assertions of 10% Kotlin market size in JVM deployments.

What you call my assertion, is my assumption about where those 10% are coming from.

Given that Java is one of the most used languages globally, 10% of it is still significant. It's definitely easier to find a (backend dev) job using Kotlin around here than one using Elixir, Common Lisp or Haskell, yet I don't see you going around bashing those communities.