I have many customers that wear out a set of tires every six months. They drive 80k+ a year.
If your tires are decent and you are wearing them out in less than 10k the camber is not the problem. Toe is the problem. If camber was the only problem the tires would only wear faster in relationship to the decreased tread profile. The tire will wear on the inside but no faster than it would anywhere else except for the smaller footprint. Toe problems scrub the rubber off.
BTW a good pot hole or going airborne can cause the bearing carrier to bend enough to have camber problems. The original camber link also was week and bent easily. The new one has been boxed. I think you said that it was replaced. The bearing carriers are way more expensive than the good camber adjusting kits. If I was at all worried I would install them.
Bosch Master, ASE Master, L1
33 years MB technician