Because there's crypto, and then there's "crypto". While FTX & co. don't match the technical blockchain-based definition of crypto, they are what people think

Because there's crypto, and then there's "crypto". While FTX & co. don't match the technical blockchain-based definition of crypto, they are what people think of when they talk about the crypto ecosystem, and are part of the crypto hype chain. If we filter the crypto market to only the true not-my-keys-not-my-coin crowd, the market wouldn't be anywhere near as large and influential as it is today.