While Zuckerberg walked a fine line and performed as well as anyone could under such situation, I was left disappointed.
He (more or less) took a beating from congress without ever pointing the finger back at them, or at the telecom industry, or the NSA, or anyone else who is breaking trust and downright abusing existing platforms and ignoring privacy.
Robo calls are straight up scams. They're on the rise, and they're not being given any attention. This is indeed hopefully the first domino to fall, that will bring this to an end.
For those interested in these these scam calls, there's a guy on Twitch (live right now) who streams reverse scamming these centers and taking up their time.