Build system generators (like Meson, autotools, CMake or any other one) can't solve programming language module and packaging problems, even in principle. So, it's not clear what your argument is here.

> I’m still surprised how people ignore Meson. Please test it :)

I did just that a few years ago and found it rather inconvenient and inflexible, so I went back to ignoring it. But YMMV I suppose.

> After reading about GNU Autotools

Consider Kitware's CMake.