Clojure explicitly embraces the host, and it is also one of the first thing people criticizes haha.

    Language built for platform vs language ported-to platform
    - Many new languages still take 'Language as platform' approach
    - When ported, have platform-on-platform issues
    - Memory management, type-system, threading issues
    - Library duplication
    - If original language based on C, some extension libraries written in C don’t come over

There's a lot of time where the core team says, Java already does this well, just use the one from Java.