Regarding the last point, at the very least SIAI would be better off not advertising that several projects are partially funded to the tune of $5 out of thousands. It doesn’t exactly motivate one to open up his own wallet for a similar small donation.
If you need to keep contributors updated on the extent to which their projects have received funding, perhaps do so privately by email on request?
On the other hand, people also often seem to think that a propensity to be nice to others entitles them to have an overly thin skin.