Jimmy Kimmel wasn't being silenced. He doesn't have a right to a late night talk show. Disney is free to end that agreement within the bounds of their contract. Being fired for social media posts isn't being silenced. Employment is for the most part at will. Getting deported for protesting the Gaza war isn't being silenced. Visas come with limitations, and the US government has the authority to revoke your visa if you break those rules. /s

You seem to think there's a bright line of "silenced" vs "not silenced". In reality there's many ways of limiting and restricting people's expressions. Some are generally considered acceptable and some are not. When huge swaths of communication are controlled by a handful of companies, their decisions have a huge impact on what speech gets suppressed. We should interrogate whether that serves the public interest.

The US has pretty much given up on antitrust enforcement. That's the big problem.

The federal government was literally pressuring ABC to take Kimmel off the air. Even Ted Cruz and other prominent republicans said that was a bridge too far.