I set up race cars all time. Extreem camber both + and -. Lots of G force in the turns. Heavy stock cars with slicks that just put a lot of load and abuse on the bearings. I have seen them set up so crazy they are running on the side of the tire. Never seen a bearing at the track or on a trailer fail because of camber.
I have seen home made axels that people have cut in half and widened out and are so far off it's crazy. Lots of tire issues but no bearing failure issues.
I have seen LOTS of bearings fail because they are set up too lose or too tight and no lube but never for camber issues; NEVER, EVER, EVER.