That it was not the autopilot misbehaving but the MCAS. The pilot probably assumed it was the autopilot (and therefore deactivated it) but didn't know about MCA

That it was not the autopilot misbehaving but the MCAS. The pilot probably assumed it was the autopilot (and therefore deactivated it) but didn't know about MCAS in this situation. I wonder if the system showed a warning that was active to give the pilots a hint of why the aircraft behaved the way it did. Even if they didn't know about MCAS, a warning that it is active would've at least triggered further responses (e.g. cut off power to the systems to return to manual control).