Rainbow, I respect your opinion and most certainly your experience butI have never heard any of my training captains or line captains say that the spoiler activation doesn't matter.
Page 3.13 of the FCTM says "Use of excessive control wheel may cause spoilers to rise which has the effect of reducing tail clearance"
I wonder if having more aileron in than is required for the conditions results in more weight on the upwind wheels, which in turn causes a slight pull in that direction, which results in more rudder being required to track the centerline. Does that sound feasible?