I would trust motors over an engine any day. Look at the contraption that is an ICE: You have fuel-, oil-, and air-delivery systems... you have ignition systems

I would trust motors over an engine any day. Look at the contraption that is an ICE: You have fuel-, oil-, and air-delivery systems... you have ignition systems... you have mechanical parts violently changing directions thousands of times per minute... A motor is metal spinning in a magnetic field, powered by chemical reactions in a battery. Which seems more likely to fail?