Yes it is.
No it's not.
Free speech only pertains to the Congress not having the right to make any law abridging the freedom of speech.
It doesn't hold in the workplace. The person signing your check has the right to limit your speech.
This is not about a paycheck, this is about a production contract for services.
In any case, a person contracting does not have a right to falsely pin a contractee with libelous charges. What Iger and Redstone did was to slander Barr. If they had terminated her pending contract for cause and remained silent, that would have been different. As it stands now she may, but probably won’t, sue them.
A business needs to defend its bottom line. If they terminate a contract based on a perception that the contract can adversely affect their bottom line, then they need to say the standard boilerplate line:
“Our contract with Ms. Barr is under review/rescinded. We have no further comment.”
Instead, Iger and Redstone, both repulsive liberal democrats kissing up to liberal elites, felt the need to not only terminate her contract but to stick it to her good and hard.
In my accounting, Iger and Redstone need to be driven from the field, shamed and ridiculed, never to be allowed back to carry on their diatribes. Do they have free speech too? Of course, they do but they have no right to slander. They had the right to terminate her for cause. They had no right to besmirch her in public.
Censoring dissident speech through the control of the public airwaves looks very much like a "free speech" issue to me.