The rankings are not objective as they claim to be. They are slanted towards marketing certain clubs.
They also are not very dynamic. Basically where you start in the fall - it’s really difficult to move very much in either direction more than a few places.
All that said, they aren’t as wildly wrong as people often say. By that I mean there are no teams ranked in the 30s who are actually top ten teams. It’s probably more accurate is you look at them as groupings of 1-10, 11-20 ,21-30 etc.
Lastly, the inclusion of national teams and regional teams with mystery and every changing rosters generally render trying to slot them worthless. Kids(parents) love posting the screenshots though. | 
