Legally, no. But if enough people find the claim credible, then it is definitely in their best interest to convince everyone else that the claim is false. Whether or not you think that is fair is irrelevant; if enough people feel the bank is not safe to use, the bank will lose business.
Ok well if that's your hand, the converse principle is more pertinent -- if it has no impact on profits, nobody cares about the random rantings of an insular group of technologists, and how they think PayPal ought to conduct itself.