Agreed, but plain old DDOS against PayPal seems like a great way to get PayPal to upgrade their DDOS defensive measures and not a great way to get them to change their policies. Companies change their policies when their customers become educated about them and the company starts to lose business and look bad in the media as a result.
In this case, Anonymous will achieve making PayPal's website even slower for a while. If they lose customers it'll be for the wrong reasons. Anonymous needs to find a way to educate the public about a company's wrongdoings, not just disrupt the company's service while not making sure everyone knows exactly why that company's service has been disrupted. They seem to have this misguided idea that DDOS = public education and corporate humiliation. That's what I find shortsighted.