I agree. Also, in general practice, the control surfaces are not normally displaced on the ground, if the aircraft is standing for more than the time it takes to re-arm etc, or at 'Readiness'. A control lock was fixed to the column and side of the seat, to prevent damage by wind gusts and so on, when the aircraft was not in use, or available for immediate use.
In addition, flaps were never lowered whilst on the ground, unless for servicing reasons, and it was actually a chargeable offence to taxi with flaps lowered, for example.
If a 'Spit' was at 'Readiness', or waiting for flight, then the elevators could sometimes be seen in the doen position, which was normally due to the pilot's helmet and oxygen mask being draped over the top of the control column, which was pushed forward to aid faster access.