Take a look a the kubernetes source code. It's millions of lines, and almost all of it is generated. In a language like C++ or Rust, the vast majority of it would be template or macro instantiations.

For an apples-to-apples comparison of compilation speed, you should either include the time it takes go generate to run, and the IDE to re-index all the crap it emits, or you should count the number of lines of code in the largest intermediate representation that C++ or Rust has.