Almost all ICOs know use these services, ICO rating sites that mass list ICOs have these services, and yes they should never be trusted with legitimate information.
They're still useful in a way where you can see all or most of the upcoming/on-going ICOs, so then you can do your own research.
Very good point. Nobody is contesting the fact that if (as an ICO) you have the money these rating pages can be effective *for marketing*. Put differently, spend that money and you will be found.
I firmly believe the market will institutionalise in the coming 12 months. Institutions are mostly not allowed to simply take into account their own best judgment but are obliged to get a third party opinion. So once we have arrived at the stage where serious reliable information is really in demand I don't think ICObench and the like will provide much benefit.