The claim that CMake is the least worst C++ build system that we have is pure BS.

In my last 3 professional C++ projects I’ve actually used Rust’s cargo tool as my build tool for C++ code. Infinitely better than CMake, plus you use Rust as your scripting language for your build system, which has great libraries for it like the cc crate, and pretty much a crate for whatever it is you want to build (eg ispc? no problem).