It would take days to learn where things are supposed to go, in the opinion of the person writing the documentation. Where things actually go in the real world varies from distro to distro and application to application. And just when you think you have it down, you try to find where that new app just installed to, and you begin the process again.
And when you finally figure it out, Fedora moves everything to /usr.
And when you finally figure it out, Fedora moves everything to /usr.