> This is easily shown by imagining an absurd C++ codebase where each method or function is in its own module That's the musl codebase, in C. It does this in o

> This is easily shown by imagining an absurd C++ codebase where each method or function is in its own module That's the musl codebase, in C. It does this in order to be able to remove unused code in a static build. It compiles ridiculously fast. So the problem does not seem to be the amount of headers.