Its true, the same thing just happened with Borderlands 2. They added microtransaction level DLC that was not included with the season pass, which is fine because the season pass did not advertise it. Think of the season pass more like a discounted bundle.
Are the camos really 160 points each? I can see why people are upset about this because if you buy 7 camos then you just spent 15 bucks, which is the same as a map pack. A handful of textures does not equal 4 new maps, a zombie map, and a weapon. They should be 40 points each.
I feel the content is overpriced and I feel like Season Pass should if not include the DLC, then give a discount to it.
Honestly, if all of any content-type (ie, all camos) were $2, I'd probably have picked up the camos. As is? No way am I paying for anything ... except I do deeply want to get one of everything, stock up on 'em, and make my emblem "PAID 2 WIN" because I think that's hilarious.
Although really, I'd be in favor of more Season Pass exclusive camos and cards anyway.