Binance is short $1.3 billion dollars in wrapped tokens on their Binance Smart Chain

They have 90k in wrapped BTC and 1.3mill in ETH but only showing 73k BTC and 1.04mil ETH in their "proof of assets." Clearly showing here: https://www.binance.org/en/assets-proof

This means the wrapped assets are not backed 1:1 and that they're basically missing ~17000BTC and ~265k ETH which amounts to roughly $1.3 billion USD with todays prices.

I've asked my friends who are deep in this industry and they can't figure out why there's such a discrepancy. Unless someone can explain, this is a very big warning sign.