With the stock mounts the centerline of the strut is through the centerline of the hole in which the strut mount fits into. With the camber set on my car (-1.2), the camber plate is shifted toward the side of the car past that center line (toward the outside). Will this cause excess load on the shaft and shock body, causing bushing wear on the internals of the shock body that allow the shaft (inverted tube) to move up and down. Because this happened on my Ohlins, not sure if it is because of the set up or the bushing went bad.

Conversely, if the camber plate was pushed inward of the centerline it isn't experienceing the same side load when the suspension flexes, as the frame of the car is angled in that direction.

???

It's a fact of life with strut suspensions that the thrust axis is never coincident with the strut axis. There are always bending loads, so you don't need to worry about this. Consider that four little cap screws are probably all that attach the strut to the camber plate -- that wouldn't do the job if camber changes introduced significant new side loads.

Dave