“There we’ve got a stunning >20 GByte of packages on our mirrors, from LibreOffice to KDE Plasma and from Gnome to Docker.”
The distribution famous for compiling everything now ships prebuilt amd64 and arm64 packages, built with generic -march=x86-64 flags. Change a USE flag from the profile default and you are back to compiling. Signature checks are optional, and unsigned old-format packages still install by default. The source distribution’s biggest news is that you can stop compiling.