I worry about the more ardent Rust enthusiasts because it seems popular in those circles to embrace an attitude that we’ve somehow arrived at the right conceptual framework.
Rust is a competent, pragmatic embedding of a few of the big ideas from serious PLT into a well-optimized C++ compiler toolchain, and it’s cool and useful as a result.
But I hope to God it’s not the endgame on fast ML/Haskell/Lisp.