> none of this information was remotely suppressed

But of course, state censorship is rarely 100% airtight. Neither it needs to be - it only needs to hinder the information enough to make those who dissent be unable to change anything and give those that are willing to delude themselves plausible deniability (thanks for providing the example for the latter point). In the USSR, which you previously mentioned, a lot of people knew what's going on. A lot of people listened to Western "voices" and read "prohibited" literature. And talked about it - in the confines of their kitchens. They couldn't do anything more. The KGB was powerless to eliminate the "voices" and the samizdat - but they were powerful enough to not let them have any effect for quite some time.

> Perhaps corporations acquiesce due to a gentleman's agreement,

There's no such thing as "gentleman's agreement" with the federal government that can destroy your business and your life. It's like a mafia boss "asking" you for a "favor". You both understand it's not "favor" and he's not really "asking". "Or else" doesn't need to be said explicitly - everybody knows it. But nevertheless, it has been said explicitly many times, so to believe there can be some kind of "gentleman's agreement" is naive bordering on willfully blind.

> because they think it's the right thing to do

I'm sure some think that'd the right thing to do to suppress dissent to the government, because the government is only acting for our own good and thus everyone who dissents is evil, extreme and terrorist. In fact, we've heard the government explain it to us on multiple occasions. That's not an excuse.

> Also, these sources seem sketchy at best

Come on, not this BS. Just read the freaking emails, they are right there. If you are going for "unless The Pravda publishes it, it's all libelous lies and I'm not going to read it" - you are either grasping at straws or are willing to blind yourself for partisan reasons. I can lead you to sources, I can't make you read them - if you are willing to crimestop on it, go ahead. It's still not mandatory, but many are already using it at full force - they are only willing to think about subjects pre-approved by their betters and only consume information pre-processed by the approved sources, which never would deliver anything unexpected or diverging from the prescribed doctrine. Your choice.

> I believe that the government shouldn't be threatening corporations to censor things, but I also don't think that's what's happening here

It's not "threatening", it's plain telling them now. We're way past threatening - we're in the place where the government just tells, and they jump.

> waiting to read some credible investigative journalism about it

Because you are going to ignore people who are actually willing to investigate things, and only believe "reputable" ones - i.e. ones who by definition are part of the system that implements the censorship - you're going to be waiting for a long time. About as much as Soviet citizen would wait for Pravda to publish genuine critique of the Communist Party and its General Secretary.

> In any case, the information still gets out, whether on social media or elsewhere.

The information gets around even in North Korea. That's not a reason to become one.