yes because their rating is based on most centralized and easiest to control and track.
ethereum is the most centralized altcoin which is also big. it is also so easy to control it and they have been moving ahead with creating mining farms for ETH in order to increase their control even further. the transactions are also easy to track and also there has been a lot of ICOs that have been gathering identification of users by asking them some silly fake AML/KYC questions which helps with the tracking part.