True, except the tiny detail that the usage of binary libraries is common in C++ culture.

Building from scratch Gentoo style not so much.

I seldom compile third party dependencies.

You don't recompile those every time.

Indeed, only every time I checkout something from github, update cargo dependencies or switch worspace.

I would not use Gentoo if I had to compile the world to, say, update PHP.

I would not use Gentoo if I had to compile the world to update PHP.