He agrees with her for raising this, and does think that some regulation should be in place, but sufficiently understanding the underlying nature of the problem is important to do less harm than good.
Government, like medicine, means making decisions based on insufficient information. More and better information should be preferred, but it's important to recall that doing nothing is also a decision. Its being a default decision does not make it exempt it from the possibility of doing more harm than good.
We want to make the best decision possible, but that needs to take into account that any multi-dimensional problem is easily diverted into taking no action even when there is widespread belief in favor of some action. "Belief" is one of the ways we cope with the absence of information: we just ask people and do what the majority wants. So it's very easy to take a complex problem and present multiple competing solutions, any of which would be preferred by a majority but no one of which will be the single best choice for more than half.
Sorry that that went into an abstraction, and you probably know all that. It just raises a red flag for me when somebody says "It's complicated" but means "Well, not doing anything just happens to suit me, so I can continue to declare that it's complicated indefinitely, because it is."