The Trump lawsuit refers to the "Community Decency Act," which does not exist

[Azathoth]

23. That's actually an interesting argument

They're arguing that the Good Samiritan immunity provision of the Communications Decency Act was an end-run around the Constitution that attempts to encourage private companies to enforce censorship policies that Congress couldn't directly enact.

Now here's the rub: the Communications Decency Act was passed by a Republican Congress, so that's not a completely invalid read of the Congress' motives. Plenty of conservatives back then were looking for all kinds of ways to censor anything they found pornographic or immoral on the new-fangled intertubes machine. Eventually, after 9/11, they hit on using anti-terror laws to shut down payment processors. But before they found that chokepoint, they were definitely casting around for ways to censor for the Lord. Encouraging private companies to do their dirty work for them would have been uniquely appealing to them.

Trump is basically attacking the motives of the pre-Trump conservative base.