To be clear, this is exactly the same for any gift of appreciated stock -- a DAF is not required to donate appreciated stock in-kind and deduct the full (unrealized) price without paying capital gains. But the vast majority of charities are not equipped to accept in-kind stock donations, which a DAF facilitates by taking stock in-kind and cutting the charity a check.

(Also, DAFs allow claiming the deduction during high-income years and deferring distribution to charities over a longer period of time.)