Thanks. I've not heard the phrase "censorship laundering" before. What does it mean?

Well, I made up the phrase to sum it up. Trademark!

The long form is, the gov can't compel someone to remove a post if it's not illegal due to the 1A.

But they can suggest a company to "moderate" the post for them, to the same effect.

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It's the same thing as when they collect data from companies.

It would be illegal for the government to spy on you, but the companies willingly give them your data.