its hard to see through pictures but there's some uneven wear.
and from a monetary viewpoint an average alignment is ~$90-150. since we can only adjust front toe on our cars, youre paying the technician to unbolt 2 locknuts for that kind of money. so if you find a decent alignment shop that will adjust camber for you as well, youre definitely going to get your moneys worth being able to adjust camber & toe.
plus if you look at the specifications on the first post, he's on the higher end of the camber spec than in the middle of it, so he can theoretically get more positive camber and save his tires.
our cars are pretty lightweight as it is so theyre not terrible when it comes to tire wear. but yeah i dont know how drastic the results would be from changing camber on our car. I got camber bolts for performance since i believe our cars are meant to be driven hard and i wanted to get the most out of my vehicle. but YMMV