It's not really convoluted. Their policy is to only publish SRPMS and tarballs. Really straightforward. The reason behind it (to make Oracle's life harder) is also pretty straightforward, even if you disagree with it.

Sure, but they're not even publishing SRPMS any more.

It seems that all source code will be published through CentOS's repositories:

ftp://ftp.redhat.com/redhat/linux/enterprise/7Server/en/os/README