It was not a contract. It was an offer and a starting place to negotiate a contract if he was interested working for Daily Wire. He wasn’t and could have left it at that. There was nothing binding.
Sematics.
An offer is a document that contains terms that haven't been agreed upon. A contract is the final offer and terms that has been agreed upon.
As far as Crowder making it a "marketing strategy", how much money did Crowder turn down?
Sure, that's some marketing strategy.