There are enough review platforms out there and they all did not prevent huge fraud schemes like

Curacao license scam 1668/JAZ, 365/JAZ, 5536/JAZ and 8048/JAZ!

I also can not see how you can prevent shills of shady sites to post their review? You can see here on the bitcointalk forum how Game Protect habitually gets attacked and this confirms that the shills of shady operators are everywhere!