Misguided way of looking at things imho. He is bringing more attention to the question and a larger non-technical audience now is aware.
I have known techies voicing issues and asking questions about Facebook practices wayback in 2008-9. You can say it took 10 years for the rest of the population to start asking the same questions. But I see it as a failure of the early warning technical crowd, who knew bad things were unfolding, to warn us faster.
Whats the lesson there?
Showboating, I've always assumed. A good deal of the questioning was clearly grandstanding, and a good number of the questions asked could have been answered by the Senators' grandchildren.
That said, if you want to grandstand, you should first run your questions by your grandchildren so they can tell you about online advertising and such, lest you look like a fool on national television.