If there is not a “state actor,” then the First Amendment does not apply.
I’m not a First-Amendment scholar. There is literature and case law on this subject, but I wouldn’t be able to summarize it well. That said, I’m fairly certain that government officials pressuring private platforms to remove certain content would not implicate the First Amendment. But it is a closer call than the Trump situation.
And, to be clear, I’m not in favor of all forms of platform censorship. I’m simply defending this instance of banning Trump from Twitter.
Without question, this is a hard question. Too many rationalists assume it is easy.
Again, Trump wasn’t banned for his ideas. He was banned for actively inciting violence and for a long history of poisoning the well.
Neither of us know what Twitter’s “real” motivations were. Heck, the executives of Twitter might not know what their real motivations were.
The real question is whether it is proper for a major media platform to remove a major political figure for ostensibly breaking the code of conduct associated with the platform and for actively engaging in incitement to violence. That activity ought not to be protected by free speech or society as a whole.