Your question is quite intriguing. In my view, mainstream media refers to media organisations that are prominent in the current cultural and political environment.

In my opinion, these organisations have largely turned against the tech industry, perceiving it as a competitor and a generally negative force.

For instance, The Verge is owned by Vox, which I personally consider with all due respect an extremely biased leftist institution that has increasingly engaged in activist journalism in recent times.

In my opinion, The Verge has changed significantly since 2015/2016 and is now unrecognizable.