He's right.
Don't get me wrong, I'm not saying he is or he isn't - my concern is that I don't see a way to prove or disprove either position.
Meanwhile, the entire firearms community is having trouble being demonetized, suppressed, and outright banned from YouTube - a Google product, obviously - for content that is legal and in most cases quite uncontroversial.
With no way of knowing for sure if Google is manipulating News rankings and firm evidence that they are using their power to harass and deplatform based on politically-charged issues elsewhere, why would you trust that they're not?
There is evidence that Google has acted in a partisan† way in other areas, though, which is what makes the assertion worthy of consideration.
†: "partisan" might not be the best word here. "Ideologically-driven" might be better. Google has acted in its capacity as a content host to suppress content that it finds inappropriate, even though that content was benign. Example: https://www.bloomberg.com/news/articles/2018-03-21/youtube-b...