When you donate the expectation is that there are no expectations, donations are openly and freely with no strings attached, when you say disgruntled donor I think that you may have expected something, preferential treatment maybe, little more respect maybe, little something else maybe. Truth is a donation is there moral and leagal way of not being on the hook while they take your cash under the guise of something good for the cause. In the end it only goes into there pockets. I have known more than a few rich greedy people claim they are hurting for cash.
No offence