Coin exchange markets create the coin "out of thin air "
You first buy the 0.0001 BTC from Binance or any local coin exchange markets.
You give 3.5 dolar to Binance and Binance add 0.0001 btc to your account.
In this transaction, really, Binance gives you BTC ?

The answer is yes. But you can not withdraw the bitcoin since the fee will be too high from that.
When you first time bought the Btc from Binance, Binance took commision from transaction.
or How do you know the seller is Binance robot or real seller ?
questions?
It is not Binance, but the seller will be the trader, so that is a real human which selling their bitcoin to you or other orders. Even if that is robot that means a trader use a software to trade, that will be the same as human as they sell bitcoin to you.

Binance will be suspending withdrawals temporarily in order to address a large increase in requests from new unique users.
Rest assured funds are #SAFU and we apologize for any inconvenience caused.
Updates to follow.
It is normal to see Binance suspending withdrawals temporarily because I think they found something suspicious and they need to investigate that thing before it makes a problem to that exchange. But in that image, Binance only suspending the address which are a new unique users, so that will not happen to all users. But I do not know the truth.