i don't think they care about that, what they care about is how they can run their business and get fees from all transactions made by their users... whether the memecoin is risky or not is none of their business, because for them the most important thing is how they can provide cryptos that are currently being traded by users faster-- and when they see that the trading value of the crypto is low, they will delist it and advise users to withdraw their crypto.

they have also warned users that investing in crypto is risky and it is the full responsibility of the user. so when users experience losses, it is their risk and the exchange cannot be blamed for that.