In my opinion, this move ends any realistic chance of Trump being removed from office by the Senate after he is finally impeached.
After all, if “Cult 45” doesn’t break from Trump, the GOP Senate never will, and the cult won’t leave Trump unless Fox New does first. Without Smith around, that is just not going to happen.
This is not simply because Smith will no longer be the nearly-lone source of facts on a platform made up of mostly pro-Trump propaganda. His audience was not nearly large enough to make a significant difference in the outcome of Trump’s coming impeachment trial.
What is far more impactful about Smith leaving is that it removes an extremely important level of cover for anyone else at Fox News who might have had an inclination to buck the “state-run” format there.