There are "long shots" and there are "ain't never gonna happens". The idea that the Republicans in Congress would appoint Trump Speaker of the House even if they take control in 2023 falls into the latter category.
There are claims of massive fraud on one side and no fraud on the other. What happens next is key. Unless Cyber Ninjas or Lindell take their claims to court then nothing is going to happen, and indeed it's an indication that they don't have a lot of faith in their findings.
But it's true that that is also in the "ain't never gonna happen" department.
-PJ