Yes, I can absolutely see that. But Harry very specifically describes being thrown into the air and falling from a height onto a dog bowl, which then shattered and caused lacerations to his back. Which Meghan then saw, and lo she was bestirred to a paroxysm of distress and rage, like a lioness raging over an injured cub. (Or she might have slid slowly down a wall, shaking with tears. One or the other; both are fairly frequent occurrence in Spare.)
Not stepping into a bowl, not skidding, not aquaplaning. Harry wants us to believe that William is possessed of some sort of superhuman, Orc-like strength.
Mind you, Harry also wants us to believe that Camilla is an evil stepmother plotting his reputational demise; that Meghan can commune with seals, and with the ghost of Diana; that Meghan booked for her father a first class flight on an airline which does not offer first class and moreover had no record of the booking; that his children were refused titles due to their mixed heritage; that Charles has the power to decide whether or not Harry gets a security detail at UK taxpayer expense; that Charles refused such security out of cruelty; and that William committed a sausage-related microaggression against him.
I sense that Harry's relationship with the truth is even shakier than his relationship with his family. Not quite NC, but low contact at the least.