Back when computer expertise was hard to come by, so admins could lord over users. The Internet has made these people extinct. SNL parody: https://www.youtube.com/watch?v=25J3u3P-HHg
Most users only bother with quick solutions for whatever problem they have, not with any deeper understanding. They get the kind of expertise where the BOFH only has to sit on the sidelines with a bucket of popcorn, watch the user shred their own system and offer a pristine replacement with all their local data gone.
The amount of times I have seen users click past pages of apt install ouput after messing with the package sources has been well above zero.