Not sure your point.I’m not sure it really matters much if predictions are ultimately inaccurate. Nothing bad happens to the recruits if they’re ranking is too high or too low. Nothing bad happens to the teams that are ranked too high or too low in pre-season polls. Nothing bad happens to the fans of the recruits or the teams (besides maybe hurt feelings).
I suppose their accuracy could help a fan determine what service/site/reporter/talking head they choose to follow. But that’s about it in terms of impact of their (in)accuracy.
One of the "products" offered by those sites is recruit ratings. It is something you're supposed to get for your $9.99 or whatever per month. Shouldn't there be some expectation for accountability?