Binance doesn’t retrieve unlisted coin via avax-c chain. But most other exchanges retrieves unlisted coin like kucoin,FTX.
Many users sent usdc.e and usdt.e to binance via avax-c chain instead usdc and usdt. It is confusing and many exchanges support usdc.e in avax-c chain. That’s why people made mistakes. But binance is so unkind and unfriendly. They rejected again and again to retrieve our assets while other exchanges retrieves their users’ asset.