I'm not familiar to the world of trading (even the traditional ones). Can someone explain how a crypto exchange (like Binance or Kraken) benefits a cryptocurrency?
Every crypto exchange account's identical to selling, buying, withdraw and storing transactions. Their existence can certainly contribute to the growth of cryptocurrency for example by reducing the transaction costs imposed because for most investors high transaction costs can lead to a decline in their interest in investing and the wider community may be reluctant to adopt crypto.