Some platforms like Ethereum are completely decentralized. You forfeit some of this decentralization bit by bit when using MetaMask, OpenSea or Alchemy, but the platform itself is still decentralized. The Web is completely decentralized, by you forfeit some of this decentralization bit by bit when using Paypal, Facebook, or AWS. The trend in technology has always been to trade control for convenience. This doesn't stop you from writing your own browser and pushing packets out of your own HTTP server.
The (now infamous) Andre Cronje had a whimsical tweet reminiscing on his days as a lawyer: "The contracts aren't for when everything is going right. They're for when everything is going wrong." Some network wide catastrophe is seemingly inevitable for any sufficiently large system. When these occur it will be the decentralized blockchains like Ethereum with failsafes in place to survive, and it's the centralized blockchains like Binance that will implode.
The (now infamous) Andre Cronje had a whimsical tweet reminiscing on his days as a lawyer: "The contracts aren't for when everything is going right. They're for when everything is going wrong." Some network wide catastrophe is seemingly inevitable for any sufficiently large system. When these occur it will be the decentralized blockchains like Ethereum with failsafes in place to survive, and it's the centralized blockchains like Binance that will implode.