I'd take that bet. There's a big difference between Google and YouTube, look at how they each handle copyright. YouTube pulls things, but Google links to DMCA takedowns.

And extremist content should be harder to find, regardless of source. There's a big difference between extremist content and less violent political discourse, though. And YouTube as a hosting platform vs. hosting your video elsewhere.

That all said, the Google OneBox is already an example of altering search results to display what Google thinks you meant based on potentially slanted sources on the Internet.