...The fact you have to report where disengagements happen seems to imply they mean for vehicles operating L3+ on public roads.... which an L2 tesla with summon is not.
There are 2 issues here:
1) There are
parking lots that are subject to the California Vehicle Codes. So if Autonomous Vehicles operate on those lots, they need to be included in the Disengagement Report.
Also, an example of Commercial Shopping Parking Lot who consents for police to enforce California Vehicle Codes is
Walnut Creek Supercharger, CA where the police came to ticket/tow a Ford Mustang that was blocking the charger.
2) Remote Operator is for Autonomous Vehicles:
California does allow Remote Operator but it is part of Autonomous Vehicles.
If it is part of manual L0, L1, L2 driving for example, a car without any driving assistance is L0 but it can be driven remotely by a Remote Operator who can manually brake, accelerate, steer, honking horn... as remote technology has been achieved for years without the need for Autonomous,
However, to qualify for Remote Operator, the car must be capable of L3 or above.
In summary:
Tesla does not have to report Summon Disengagement if it's done in private parking lots that do not participate in California Vehicle Codes (some private lots want police to enforce the codes and they would consent for that.)
Tesla does have to report Summon Disengagement if it's done in parking lots that do participate in California Vehicle Codes (all local, state , Federal properties and some private lots that want police to enforce the codes and they would consent for that.)
Smart Summon is L2 if there's no Remote Operator and the driver must practice hands-on-wheel. That way, there's no need for Summon Disengagement.
Smart Summon is L3 if there's no driver inside the car to practice hands-on-wheel and it is controlled by Remote Operator instead. That means Tesla needs to do report disengagements for parking lots that are subject to California Vehicle Codes.