If the donor's identity is kept hidden then abuses such as "quid pro quo" donations become possible (See https://www.classy.org/blog/what-you-need-to-know-about

If the donor's identity is kept hidden then abuses such as "quid pro quo" donations become possible (See https://www.classy.org/blog/what-you-need-to-know-about-quid-pro-quo-donations/ https://www.classy.org/blog/what-you-need-to-know-about-quid... ) i.e., the donor could make an arrangement such as, "I'll direct my DAF to donate $X million to you if you then use that money towards buying $4X worth of services from my company."