There’s also the continuity with the final battle to consider, where Palpatine’s far stronger lightning merely acts to disable many ships. What if Rey’s lightning shorted out the engines and she recoiled in shock, then the ship regained power and continued its flight? Because as the scene plays now, it acts to establish that Force Lightning can blow up entire ships so Palpatine pulling this punch in the final battle feels even more hollow.
Looking back at the scene, this might play better than before since it would explain why Finn yells ‘No!’ as if he bet on a podracer that didn’t win.