Unpleasant is the word your choosing to use? Having my credit card information that links to my bank account, and the only bank account I have, and then having that fucked with is more than unpleasant. I'm thankful when the PSN network was compromised I wasn't one of those people with the claims of large sums of money being circulated out of the bank. ( Yes I know, could easily be coincidental evidence. Not the point. )
By all means the cause is more than plausible with Sony's abysmal track record. The methods are absurd and obnoxious, but by all means keep hiding behind this tired old excuse that the end result is to hurt Sony. The people you're trying to help will have no sympathy when you're caught and sentenced.