Nice bedtime story for the kids. How many sigmas does the moon differ from all other known sats? Compare and contrast any and all other moons for stable orbit. How does the moon only have mass for a skin 200 miles thick? Does your grit-collision model account for massive moon craters that never get larger than a few miles, even if the center rises like a contact-lens higher than the rims supposedly defining them : and then there is the massive dense sphere/core laying below center of each Mare? Yawn.
Please present us your theory that explains everything. At least the size of an scientific article that gets peer review. Multiple pages. If you cannot, go back to your room and keep quiet while scientists are speaking.