I have to admit - Expanding Earth is hard to debunk!
I think because like Flat Earth many of the observations and elements therein are accurate - they just get the overall picture wrong.
Like stealing the ball with 4 sec left running down the court no defense in sight for the winning layup and missing - comically bouncing off the backboard.
Alas, I believe most crackpots mean well, they just aren’t very good at the sport