One problem the blog missed is that it becomes next to impossible to migrate a build system after some time.

Just considering autotools, configuration is written in an obscure macro language to describe the resulting sh lines.

Boost has been “migrating” to CMake from their B2 (that nobody uses) for like a decade if not more.

The blog says people should move on from autotools, but that’s an impossible solution for too many libraries at this point.