Zuckerberg is a rational actor that's smart enough to know that he's not going to want any knee-jerk solution put together by idiot politicians. I'm confident that he doesn't want FB being permanently hobbled by laws or acts of Congress.
He's rational in a sense, but he very well might not have ever stepped back far enough to really consider broader perspectives with an open mind, even as he reads and hears concerns. He probably reads them all with some strategic/tactical mindset that blocks him from truly getting the point.