This is strictly an observation, not intended for anyone in particular.
Interestingly a car could have the hood, trunklid, doors and fenders replaced during the restoration process, no one seems to care. But once the spot welds of panels are touched, then the car is no longer desireable. I've explained to non-gearheads that when I'm replacing a major body panel, I think of each spot weld as basically being a bolt holding things together and that it just takes more labor to undo it. It's not rocket science to reconstruct something on down the line if the wheel house or similar part has been hacked on.