You're trying to apply common-sense to law. That doesn't work. The court has to assume the patent is valid until it's proven otherwise. The patent was legitimately granted though it can and will be challenged. This is important because it explains why these patents are continuously being tested in the court. Apple is being offensively sued by various parties themselves. They need to have strong patents that have been validated by court rulings to defend themselves. Companies are less likely to sue Apple if they have a strong war chest of patents. The reason certain companies are able to get 'picked on' is the lack of a strong war chest to defend themselves. Samsung is a very rich company yet they are getting it from both Apple and previously Microsoft who simply offered licensing. Apple could easily find themselves in the same situation if they don't play by the absurd rules.