Slowroll iso repos

What I am trying to get to is; the site says it is where you download the slowroll/iso. https://download.opensuse.org/slowroll/iso/ Nowhere does it mention you have to remove the tumbleweed repos and install the slowroll repos. My point is if a new person wants to try opensuse and thinks slowroll would be a great fit, how are they to know these things? Wouldn’t it be better that the site to download slowroll is the only place a new person has to visit? They download the iso, install it and ready to go. What if I want to do a fresh install and don’t have another PC to get the repo removal instructions (which have had three versions so far).

Is there a particular reason the slowroll repos are not packaged with the iso?

Lastly, if the download site isn’t really a slowroll iso, why is it there?

Not being critical, just confused.