I think what they're trying to say is that the types of electric motors used in vehicles (like switched reluctance motors[1]) typically require a computerized controller that someone has to program, and therefore has an additional point of failure from a software standpoint.
However, I'm pretty sure any modern internal combustion engine will have a highly advanced ECU computer too, so this is sort of a non-issue (though I'll admit I don't know much about aircraft engines specifically).
However, I'm pretty sure any modern internal combustion engine will have a highly advanced ECU computer too, so this is sort of a non-issue (though I'll admit I don't know much about aircraft engines specifically).
[1] https://en.m.wikipedia.org/wiki/Switched_reluctance_motor