Two thoughts here.
One, the #1 ranked class isn't a lot different from the #8 class. Sometimes it literally comes down to a school signing more players.
Two, it's not a "impossible to meet" goal. It's also something that doesn't deserve as much attention as it did five years ago. The portal changed everything. A #10 class with the right additions in the portal could have the most talent coming in versus any other school but it won't be "ranked" that way.