I'm not affiliated with Substack, but I'm having difficulty with your premise here. There's literally a Trump app on the App Store right now dedicated to spreading falsehoods about the 2020 presidential election. What opinions is "Big Tech" "censoring" and why should one think there's any validity to your slippery slope argument?
He may be the leading candidate to be the republican nominee, but that's not the same as the leading candidate likely to win.
Your logic also doesn't work; you can be both the leading candidate and a fringe extremist.
You keep using this word, "fringe". I don't think it means what you think it means...
By definition whoever wins the most votes is mainstream, not a fringe extremist.
https://www.usatoday.com/story/opinion/columnist/2022/02/18/...
It was that, and mail-in balloting and dropboxes, which the Democrats used to great advantage, blindsiding the Republicans in all the swing districts.
It seems to me the Democrats snatched victory from the jaws of defeat in 2020. However in 2022... mathematically, they're almost guaranteed to cede the House and maybe the Senate as well, depending on how events in Europe and general economic trends play out.
More than that is the general culture of suppression of the "wrong" view of reality. Most people who were merely to the right of center moderates in the 00's are now accused of being absolute evil if they voice any opinions. I've been told by well more than a dozen former co-workers that they're afraid to say anything or let anyone at work find out about their political opinions because they're afraid of getting fired & won't be able to feed their families. The suppression and censorship is very real.
One or two exceptional counterexamples do more to prove the rule than to disprove it.
In fairness, there are multiple explanations that don’t involve this being objectively true, while also being how these people perceive their situation.
Aside from that, there are a lot of "cancellations" in the news, even if they're exceptional and only highlighted as a result of sensationalist reporting (or, more conspiratorially, behavioural control) the risk may still be actually too high. You only probably only have to be de-personed once for it to have a lifetime effect.
Maybe the word "censorship" is too loaded, but the claim that big tech platforms permit a narrower range of expression than they used to is so uncontroversial that it's barely worth defending. That's not always a bad thing; many of the people who've been banned in recent years are noxious pricks whom I don't miss, but what happens when the people who've been banned from Twitter and YouTube, kicked off AWS, terminated by Cloudflare and blocked by Visa and MasterCard decide to start a Substack because its commitment to free speech means it's the only place that will host them? I won't name names but I can think of, for example, a couple of semi-prominent figures who have been banned from other platforms due to their, ahem, "heterodox" views on vaccines, who now write on Substack and reportedly make a very healthy income from doing so. And worse actors might join the platform if they haven't already.
Is it really such a conspiratorial "slippery slope" to suggest that if the people who've been banned from everywhere else grow a huge, lucrative audience on Substack, then Substack is going to come under increasing amounts of pressure to kick them off - pressure far greater than what it's received so far in the face of lesser controversies? What form might this pressure take?
> HL Mencken once said that “the trouble with fighting for human freedom is that one spends most of one’s time defending scoundrels. For it is against scoundrels that oppressive laws are first aimed, and oppression must be stopped at the beginning if it is to be stopped at all.”
> There’s an unfortunate corollary to this, which is that if you try to create a libertarian paradise, you will attract three deeply virtuous people with a strong committment to the principle of universal freedom, plus millions of scoundrels. Declare that you’re going to stop holding witch hunts, and your coalition is certain to include more than its share of witches.
> So while some small percent of Reddit’s average users moved over, a very large percent of its witches did. Sometimes the witchcraft was nothing worse than questioning Reddit’s political consensus. Other times, it was harassment, hate groups, and creepy porn.
https://slatestarcodex.com/2015/07/22/freedom-on-the-central...
Well, touting the fact that the App Store, in its benevolence, allows an app by an ex-POTUS, like it's some sort of triumph of free speech speaks volumes, doesn't it?
The ability of an ex-president to have such reach would go without saying in the past. Now it's up to the whims of Big Tech - and Twitter and others had already cancelled them.