Unless the US government bans all sites except google and turns Youtube into a direct propaganda tool and declares that publishing any unauthorized content is a crime, then the worst that can happen here is that Youtube's updated algorithm fails to serve the needs of its userbase, in which case it will probably be amended due to a drop in the site's popularity and engagement metrics.
Content that isn't recommended hasn't been censored, it's still discoverable as long as it exists on the platform, and free speech remains unaffected even when a single platform decides to alter its algorithm in a way that might slightly reduce the immediacy of certain kinds of content.
Not all slopes are slippery.
Someone tried to set one up. It's called BitChute. All the payment processors blocked it.
The reality is that YouTube is not just "a single platform", it's THE platform. It's owned by a megacorporation with extreme political leanings. It's incredibly influential on votes and opinions globally. It's run with zero transparency, by a small unidentified unelected group of wealthy and powerful people.
You're just comfortable wtih this because you think they're on your side politically. Most people are comfortable with moderate levels of tyranny as long as they think it's their tribe that holds the levers of power.
But if Google was owned and run by evangelical Christians, and they were shifting their recommendations to discourage "immoral" videos of gay pride, pro-trans-rights arguments, sex worker rights, etc, you'd be incensed.
There is a discussion to be had about some topics at the edge...but 2PM everyone agrees is part of daytime; the flat earth 'conspiracy' should never be recommended to anybody.
And sadly, in the current climate, this also has to be said: This does not mean Google is picking sides. If you on your own reflections decide that for some strange reason the earth is flat, that is your right, and no one is infringing on it by not giving you a platform.
'There is a discussion to be had about some topics at the edge...but 2PM everyone agrees is part of daytime; the flat earth 'conspiracy' should never be recommended to anybody.'
It should be recommended to anything to whom it would be relevant to. That's the whole idea behind recommendation system.
Worse, people that said it was a conspiracy are now calling other things conspiracy, without any consideration for their past errors.
Ultimately I've always found the term silly. People can believe idiotic things for sure, yet on the other hand I think there is an equilibrium where on one end you have people who believe no 'conspiracy theory' could ever be real, and on the other hand you have people who indulge every 'conspiracy theory' as probable. Both opposite extremes are equally naive.
[1] - https://en.wikipedia.org/wiki/Conspiracy_theory#Etymology_an...
[2] - https://www.zerohedge.com/news/2015-02-23/1967-he-cia-create...
Sure... some. But that's not the reason it's promoted. Paradoxically, many "fall for" it's real utility my merely lumping it in with whatever they want to discredit; disinformation is rather effective when it attaches obvious bs to other things.