Falken tires destroyed, looking for advice on alignment

At 28k miles on my 2019 my Falken tires just got destroyed, as in really destroyed (pictures below). I’m 4k miles since the last service, and a couple of months ago my wife mentioned a noise so I went under the car and inspected all 4 tires. I did not see uneven wear, and the dealership apparently did not see it either, so my conclusion is that tires were fine until very recently, something must’ve happened and my alignment must’ve been way off. Or so I thought…

So I put a new set of Pirellis (from Discount Tire), that’s whatever they had in stock since I couldn’t wait for a week to get a set of Crossclimate 2, but whatever, and this morning I headed to the dealership to get a new alignment.

To my surprise, the alignment wasn’t nearly as catastrophic as I thought it would be. Toe in the rear was pretty much zero, at the edge of manufacturer specs but… could that be enough to destroy the tires like this?
I see I had negative toe in the front, though still within specs, and almost zero at the rear. After the alignment they left it at zero at the front and +0.12 at the rear (consistent with what I saw in other posts in this forum, that’s about the center of the range).
My question is: It seems my vehicle has quite some camber in the rear, with the right wheel slightly above specs. Would it be advantageous to have more positive toe to compensate that a little? I’m asking because if the lower edge of the settings destroyed my tires that fast, maybe I need to stay close to the other end of the range? I just want to protect my new tires.
I’m not new to AWD tire wear, but in my Audi I’m on my 4 set of tires, they always lasted above 40k each set, and I’ve never seen tire destruction like this in my life.

Rectangle Font Parallel Pattern Diagram
Tire Automotive tire Synthetic rubber Wheel Tread
Tire Automotive tire Tread Synthetic rubber Wheel

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