That's not looking for a scapegoat; it's looking for a set of root causes
It's a scapegoat. If you want people to stop looking up content about distrusting the government, the solution is a more transparent government, not to stop them from watching the content.
This rabbit hole encourages extremism in some people, and that can be harmful to society. Why the defeatist attitude, that huge companies have to encourage extremism or people will stop using their products? That's non-sensical
It is also unclear to me that the recommendations ought to be moderated by some embedded state entity to make sure the results align with what is in political vogue.
The other thing is that we really don't have shared definition or word-feel for "extremism". The people who are the most vocal about curbing extremist content also happen to be wildly partisan. I don't think that is a coincidence. I sense the false-positive rate is extremely high in this regard.
I wouldn't say they are looking for a scapegoat, it's just political theater and tactical expediency. Furthermore, I'd also say "root causes" is not quite right either. At the end of the day, this is a very partisan committee and I believe they understand the power in getting these big social media companies to crack down on conservative content under the guise of preventing "extreme/radical content".