Certainly Rust is aimed in that direction. I'm unconvinced one could (for example) write a high-performance javascript JIT in Go. Also, neither of those languag

Certainly Rust is aimed in that direction. I'm unconvinced one could (for example) write a high-performance javascript JIT in Go. Also, neither of those languages has been around anywhere near long enough for a browser to be written in this (Rust still isn't finished!), so insulting people for writing browsers in C++ without suggesting a useful alternative doesn't seem very sensible.