Another example is lab leak.
Thus, yes, yes they do.
[1] https://nypost.com/2021/03/25/dorsey-says-blocking-posts-hun...
[2] https://www.rasmussenreports.com/public_content/politics/gen...
In fact, your bringing up the story (which I immediately recognized) proves the point. It is indeed, part of public discussion.
Edit: The point is that the story was part of the "public discussion" -- though I understand that some people disagree with some of the articles that were part of the public discussion. Disagreement is a normal part of "discussion." The original claim I was responding to was that this story was "suppressed" from "public discussion." It was not.
Politico: "Hunter Biden story is Russian disinfo, dozens of former intel officials say" source: https://www.politico.com/news/2020/10/19/hunter-biden-story-...
NPR: "Analysis: Questionable 'N.Y. Post' Scoop Driven By Ex-Hannity Producer And Giuliani" source: https://www.npr.org/2020/10/17/924506867/analysis-questionab...
Compilation of journalists calling it disinfo: https://twitter.com/tomselliott/status/1440402740409110528
I honestly don't think I am following your argument at all. The fact that they wrongly reported on something without evidence is exactly the point.
They don't. They never have. You're ascribing way more power to tech companies than they've ever had.
That being said, the combined power of tech companies and media companies -- of which there are many -- does have the ability you're talking about. (For example, Fox, Warner, Google, Nytimes, etc.) The lines certainly have become a bit blurred, with Comcast and Verizon buying media companies though.