I have a slightly different view in terms of centralized and decentralized, first I want to say that there is no single token/coin that is not controlled in cryptocurrency, all hold on centralized systems, only different methods between centralized and decentralized, secondly, blockchain is data storage The biggest ever created, with the blockchain system we can store data in the form of complex algorithms, what needs to be understood is that the creators of these algorithms must have the ability to control the algorithms they make.
third, the death of several altcoins, the fall of ETH and rising prices for bitcoin is inseparable from the influence of using the parent blockchain, so I think centralized or not centralized is just a term, because after 2017 we begin to understand that there is something/someone who manages blockchain-based cryptocurrency. Do you agree?
Speaking about centralized crypto, we should remember about Tether, first of all. It is a fully centralized cryptocurrency. Tether Limited is engaged in the issue of tokens and verification of payments. However, despite all the shortcomings of it and the presence of promising competitors in the face of younger stablecoins like Libra (that has not even yet appeared), Tether still remains the leader in this category of cryptocurrencies.