Y’all realize that due to the crown in the road, there will be slightly more RF outer wear. Very slight and likely only noticeable to the non rotate proponents.
Also the outer treads are always bound to wear more due to turning at speed. The type of roads, speeds and loads determine how much.
In the pic above that alignment was a bit pigeon toed. Which you found out. These trucks like 0 deg toe. Dead straight.
And then above all that, duallies will always wear quicker on the front than comparable srw due to the pizza cutter tires that have a slightly narrower outside track width, less rubber in the ground and closer maxing out rated load due to lower load ratings.
All this becomes very apparent if one has a similar srw to compare and especially if you let the tires wear out without rotating.
On the extreme end of it I had a few years where the majority of the miles were high speed mountain freeway miles, through a twisty canyon 2x a day. Vehicles would wear the tread twice as fast on the outer sides even with more frequent than usual rotations. To the point that to extend tire life, after 15-20k miles I’d remount the tires outside-in and put the good tread depth to the outside. Not as easy to discern in other scenarios of course.