That doesn't make it any less true. Free speech doesn't depend on private support. The reach it can have does, but that's a big difference.
What is tiresome is people believing that every opinion has a right to be heard at the same volume and reach as any other, regardless of how the majority of society perceives them or even, in some cases, how despicable it can be.
> How long will conservatives sit back and watch as tech firms systematically attempt to erase their world view from the political conversation?
Let's stop pretending that this is true. Twitter is not "shadowbanning" anyone and, if anything, it's been the opposite. In a clear case of false balance they have been over-representing ideas held by a minority of the population in order to appear fair and balanced.
Now that is clear that the message doesn't resonate with many people as expected, there's a lot of frustration among conservative voices. It's time to start accepting that certain ideas are not being suppressed. They are just not that popular.
> doing nothing to an NYT journalist who (as noted above) says repeatedly she wants to kill all men, that she hates whites etc?
Context matters. And reading comprehension does to. And cherrypicking cases to prove a point is not really effective.