Like most of these rants against "censorship" they skip over people's rights to restrict speech as a form of speech itself: there is no moral (or legal) right to give people you disagree with a forum or audience to express their view. Calling to silence others (that is, encouraging them to take your view of not giving them an audience) is fine as long as people have a choice on how to respond. If there is some notion…
“Free speech” in the moral sense is exactly that people who operate civil infrastructure shouldn’t use their privilege for censorship. So... people who believe in “free speech” as a moral value will disagree with your first paragraph — and hence, your entire post. You assume your conclusion, so your argument fails to be persuasive. “I disagree with what you say, but I’ll fight to the death to defend your right to say…
However, these modifications doesn’t work the same way: “to defend your right to be trending on Twitter” or “to defend your right to be on CNN tonight.” These things are still forms of speech, of course, and yet their exercise does in fact preclude others from likewise exercising. It doesn’t make sense do defend every person’s right to be trending on Twitter.