Yes, it is true that Tezos (XTZ) has maintained its CMC rank, which means it is not dumping faster than other coins. This is likely due to the fact that Tezos has consistently outperformed its competitors, such as Elrond, in terms of its technology and development. In addition, the Tezos community has been very active in driving the adoption of XTZ and its blockchain. This has resulted in a steady increase in the value of XTZ, which has helped it maintain its CMC ranking. Furthermore, it is likely that Near will soon fall behind Tezos in terms of CMC ranking, as Tezos continues to gain traction and increase its market share.