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TPD3S014-Q1: output capacitor

Part Number: TPD3S014-Q1

Dear team,

I have a question for the output capacitor value. In the below section, our datasheet explains why we need 150uF capacitor, but I still can't understand it. 

Firstly, based on the description, I think 'a short' means the load shorts to ground. Once short occurs, the current will abrupt increase, and our device will enter protection mode, and then the current will be decreased to 0.85A. So my first concern is that the output current will be increased firstly, not decreased.

Secondly, assuming the current is decreased, then the inductance for the USB cable will generate back electromotive force, so the output voltage will be decreased, maybe negative, right?

Thirdly, the datasheet said that 120uF is a must for USB standard applications. Could you please tell me the reason? If the customer can accept the undershoot when short occurs, then 120uF is no need and 10uF is enough, right?

Thanks & Best Regards,