Why do we use "git remote add origin..."?

I've pulled this from the teachers notes on the Pulling Changes video earlier in this module:

When you clone a Git repo, the original repo is automatically added as a remote on the clone. You can name remote repos whatever you want, but the default used when cloning is origin, because it represents the repo this clone originated from. Because of this default, you'll see a remote repo named origin on most Git repos you work with. In fact, in many cases, the origin repo will be the only remote repo, because everyone on the project just pulls changes from that single repo.

So in the earlier example medals was the origin of myclone but here we are setting up a remote repository to act as the origin for medals to show how a remote Git repo would be set up in situation where there is one online main repo that several people work from. I think.