So the argument is that attacks can happen too fast to go through the tedious process of FISA courts, but one of their examples is the Solarwinds hack that was

So the argument is that attacks can happen too fast to go through the tedious process of FISA courts, but one of their examples is the Solarwinds hack that was ongoing for over a year. And I don't understand how greater access would have helped with the Exchange exploits, except if the NSA was aware of what zero-days were being used they could contribute their knowledge gained from their exploitation of them.