Anonymous has a very loose and decentralized command structure that operates on ideas rather than directives. Anonymous is not a group, but rather an Internet gathering. The point of Operation: Payback was never to target critical infrastructure of any of the companies or organizations affected. It is a symbolic action – as blogger and academic Evgeny Morozov put it, a legitimate expression of dissent. The continuing attacks on PayPal are already tested and preferable: while not damaging their ability to process payments, they are successful in slowing their network down just enough for people tonotice.
Source: https://thehackernews.com/2010/12/anonymous-is-not-hackers-groupits.html