I didn't advocate that anyone ship production code written in C.

I advocated that people write programs in C and run them to see how fast executables can startup and run.

(Dart isn't great for that because while its runtime performance is pretty fantastic, it does still take a hit on startup because it's a VM with a fairly large core library and runtime system.)

Spending "a little time writing some programs in C" is not the same as advocating that people write most of their code in C, or that you use it in production.

Maybe try reading Crafting Interpreters, half of which is in Java and half in C.

http://craftinginterpreters.com/