In my opinion no OS manages such a feat of making itself unknown, there are always some problems, and I think you agree with that in practice (it’s more a matter of thresholds). So there is continuous improvement. The question is then whether or not the possible financial boost from the donations will improve the OS in such a way that the net benefit is positive with respect to the negative value of the donation notification (a utilitarian viewpoint, I guess). I would say it will be a net benefit, not least because the negative value of the notification is so small.