A contract is a contract. Dumb lawyering is a preventable blunder. For example, Taylor Swift's parents hired stupid lawyers who failed to negotiate with Big Machine Records to retain her ownership rights for her own music. So after BMR sold those rights to Scooter Braun, Swift had to go and re-record every single one of those songs to retain royalties. OR her parents could have just gotten better lawyers, or signed with someone else. Tucker is a big boy, and knows what he signed.
This has been discussed ad nauseam. Tucker contends that Fox breached by its smear campaign that they launched right after his dismissal using documents and video that were exclusively in the control of Fox Employees. These are facts that are irrefutable. However, Tucker goes on to assert that he was placed in this position as part of the settlement with Dominion. If this is established, it places Dominion in the situation of being a partisan actor, and thus not independent or trustworthy as a provider of Election services. This is a bigger game by far.