While I applaud the intention behind the project I can't help but wonder how effective it will be. Human nature is such that people complain much more than give praise where it is due. Just take a look at the premier hosting discussion forum "web hosting talk". Even extremely reputable hosts find that they get dinged with a negative "review" which is in actuality merely a complaint.

Experience has taught users that a public outcry will get them faster and probably a more generous response from their host than a private ticket.

There are quite many hosts which are not that good at advertising or promoting themselves but which outpace the more popular hosts like wpengine, bluehost, digitalocean, etc. by leaps and bounds and what's more, they do so at a fraction of the cost!

These "diamonds in the rough" are very difficult to find but I've had the best of luck finding them through the WHT forums where they themselves hang out and talk shop amongst themselves. I recently found a superb fully managed vps host at a price you wouldn't believe.