Crazy alignment problems

It looks like it has pos camber because he drove it forward with a lot of toe in and it sucks the tires in at the bottom and forces them out at the top.
As far as the linkage goes it really makes no difference, it will change bump steer and it can change toe out in turns but that is it if the toe is right than it will roll back and forth all day long and still be right on.
Yeah I can see what you are thinking.... What gets me about the tie-rod settings is that the driver's side looks close to normal while the passenger side looks waaay out. If you moved them, then it seems like both would be too far extended. Plus look at his 1st and 3rd pix in post #1, which I think are showing the driver's side wheel after backing up and moving forward, respectively. I don't see any tire distortion but the camber and toe have really changed. That is why I am suspicious of some parts issues and other problems.

But let's run with your idea as your are right on one matter 100%: the OP indeed does need to get the linkage centered to be anywhere close, regardless of whatever else may be going on.

OP, I'm gonna assume you have manual steering. (That may be wrong.) If so, look at post #27 in the thread linked below to see how to find the center of steering in your steering box. Once found, put some tape on the steering wheel and another reference point on or around the dashboard, so you can go back to this position to know where the center of steering should be. This will be the steering location around which you will initially adjust your tie rods to get both wheels straight ahead.
steering wheel - alignment