If binance users themselves hold 30% USDT on average it doesn't matter for Binance whether it's pegged or not (I mean, obviously it will still matter somewhat),

If binance users themselves hold 30% USDT on average it doesn't matter for Binance whether it's pegged or not (I mean, obviously it will still matter somewhat), since any de-peg event will also devalue any USDT user-balances