I don't think you folks are understanding how this works.
Scotus said the President is immune for official acts; they didn't say whatever the President does is official. So if Biden does a thing, they'll run that up the courts and say "nope, not within the President's powers." If Trump does a thing, they'll say the exact opposite.
It's a judicial coup. SCOTUS run Bartertown now; along with a bunch of other federal judges that SCOTUS can overrule by hearing any appeal they want to.