The camber amplifies any of the other angles which are misaligned--it's not considered a wearing angle in and of itself. The real problem is toe out on the rears--that will wear tires out almost faster than you can blink. The two fixes are:
1. Get an alignment so that there is no toe out in the rear. Ideally from a shop that uses manual measurements. Computerized alignment machines only work if they are calibrated properly (often neglected) and have personnel that understand alignment (a selling point for computerized systems is that you don't need knowledgeable personnel). Shops that use manual gear have to have personnel that understand alignment (otherwise they couldn't use the tools at all). A frame shop is often a good choice, so are race oriented shops that do custom work on race cars.
2. Tesla used to provide some eccentric bolts to reduce the camber angle which reduces sensitivity, but I have heard they stopped doing that. There is adjustable linkage (third party) that can be installed to reduced excessive camber, which will make the car less sensitive to improper toe.
Tesla did finally get the alignment correct on my car, but it took them several tries, including the first one where they didn't do anything other than tell me the alignment was perfect--even though you could easily tell from the tire wear that toe settings on three of the four wheels were way off. They did try hard after the first time, and it's not their fault for being general mechanics rather than alignment specialists.