They seem biased to me. A friend of mine who's doing an ICO told me that they paid 10ETH for 5 quality ratings and that's that! I noticed that some ICOs with good project, team, and good social media presence are struggling with getting good reviews.
With all that said, should it still be a factor to look at when investing in ICO?
If you don't trust rating ICO ,then you must do your own research about this ICO , you can review their team ,their produk and their choice to grow up when already listed on market .but be careful to chose ICO because many ICO is SCAM