That's right!
Most of the ICO ratings are paid service that only gives good rating to those that paid them accordingly. Before, when they are just starting around I guess most of their reviews are fine and true but now as time goes by, everything changes. But don't worry about them anymore, it's just a matter of time that they will be gone and inactive.
Fully support. It simply does not make sense to link to rating sites. Most of them really give marks for money,therefore, you should not 100% trust these estimates.Personally, I use rating agencies for informational purposes only. For receiving general information about the project.