To Honest, I most find it very difficult to comprehend what you are writing.
Please you should how to make use of your punctuation mark, full-stop and many other because I find it very hard to understand what you are writing, although it would have been more better you used pidgin English to make your post so that we go fit understand wetin you dey cap.
And yes, you could be very right in what you are saying but due to lack of the above things that I have mentioned made me to lose focused on what you are saying.
From the heading of the thread, I was expecting something about how exchanges take control of our deposited Bitcoin and how give them access to our Bitcoin, but I saw something about liquidity, KYC, and Bitcoin withdraws.
I understand that all exchanges needs liquidity to allow free flowing transactions to be able to allow buying and selling without wasting time. And kYC is needed in most of the exchanges to allow deposits and withdrawals.
Nevertheless, the liquidity is a knowledge been shared, I hope the OP can explain more about the topic.