Why is a court the wrong place to settle those disagreements? That is to say, why is it preferable for a President to face the possibility of impeachment by Congress over a jury of everyday citizens? Seems considerably easier to rig the former than the latter.
Let's take Biden's student loan forgiveness as an example. Some say that he overstepped his authority.
The courts should decide if that act is legally permitted, but it would be a tough pull to think that he should be personally responsible for that, including potential jail time.
Now egregious cases that fall outside of the reasonable expectations of the role of the President. Sure, those should go to the courts. But I don't think this case prevents that. Most of what Trump did after the election, IMO, was clearly as a candidate, not a President.
