And that, DY, is my point. You can’t even see the moral abscess of taking money for institutions that is tamei, by the standards of the same institution. These heilige mosdos aren’t the bais hamikdosh, and the donor isnt bringing a korban looking for HKBH’s forgiveness. And even if you were to make the comparison, He isn’t taking it upon himself to change his ways upon giving the gift. His continuing in his lifestyle (one not holy enough for the institution) even after making the gift could be compared to pigul, and the readiness of the hypocritical institution to take his gift makes for a compelling comparison to a cohen who has forsaken his role.
Lets also be clear about what’s at stake. You are making the argument because we both know that the “system” is unsustainable without the tamei (by the standards of the heilige elitists) money of the less frum, the andere. So any appeal for integrity and courage of conviction is a non starter. which is a horrible commentary on either the religiousness of Jews who can make substantial donations, or the integrity of the institutions that make a point of exclusion.
Your potato chips straw man is irrelevant, and you know it. We’re not talking about an individual’s choice of refreshments, we’re talking about the representative institutions of our society which will shape the lives of our children. Of course they have to have the highest standard of integrity, and no vestige of hypocrisy. If they don’t need that, I fear for the generation they are educating.