> This auditability is an interesting aspect of how 501(c)(3) organizations work, because it means you can donate funds to them and know that the IRS will ostensibly be ensuring that the money is spent in a way that supports their stated mission.

Come on. IRS is woefully understaffed. This might be a good talking point but short of some sort of egregious financial crime (like actual fraud) it seems unlikely the IRS gives a shit about how PSF spends its money.