My view, is that exchanges are involved in shady activities.
This blows back on consumers -> see the people de-banked in the UK for simply using Binance...
What might be layering?
EMI-> BANK or BANK -> EMI has a full robust record archive for the transfers A->Z.
In addition they carry out AML as standard practice.
Banks have issues with Crypto exchanges. EMI's do not, both carry out their︀ legally required AML processes.