Not remotely comparable. In the early TV era, there was no realistic and comparable alternative venue for the speech being censored.

In the modern internet era, of course, there are dozens or hundreds of credible alternative ways to disseminate your speech.

Not comparable. If television censors didn't do their jobs, the FCC would have revoked their station licenses.

Not only did you have to worry about the FCC, the advertisers would have ran away.

This is still very much a concern when it comes to why Twitter enforces the rules it has on the books.

That's what makes it government censorship