What you meant to say was, their braindead idea was that if you want to be able to trivially use ANY go program or library on GitHub, you can use $GOPATH and the go tool [1] and not fuck around with autotools and makefiles.
If you're into S&M, no one is stopping you from using the core pieces of the `go` tool by hand.
[1]: ALL of my code can be download, built and run with: `go get github.com/myname/myproject; myproject` (I have $GOPATH/bin on my path)