That's why how much power an EV has is closely related to the size of the battery. 400kW from a 75kWh battery is a little over 5C.

Honest question, though: does "Turning over an engine" (as an earlier commenter typed) have actual meaning for an EV?

No, it is referring to what the starter motor in an ICE vehicle does. It was most likely a misunderstanding, but it is more similar in that it pulls very high loads like a drone battery does.