Because if they don't do that, and the sell orders and withdrawals remain unaffected, wouldn't that mean that users can still deposit using their previously generated addresses, sell and then withdraw these funds?
I was able to deposit, exchange, and withdraw up to 4k BUSD.
Therefore, even if the deposit option is not activated, you can send the coins to the deposit addresses, which you will find in the “Deposit History[1]”
The date of that post was 2022, that is, a long time after KYC was compulsory.
This part seems contradictory to me and may cause some legal problems for them.