Suspect when Fox under pressure ordered Carlson to stop airing the January 6 tapes, Carlson decided then it was time to leave. Also when Fox caved to Dominion without a real fight, it convinced Tucker to leave.
This is a good thing. There is no reason why Carlson can’t continue being a force against the Uniparty (R). Not to mention, no longer will he come from work reeking of that DS stench.