Why has nobody addressed line "bitcoin is too unstable"?
Bitcoin can be transferred to fiat -instantly- to bank accounts without ever having to deal with a single satoshi. Bitpay, coinbase, and many other sites offer carts like this and callbacks so you can enable automation. These sites honor the price of bitcoin when the payment is initiated and the user paying has a pre determined amount of time to complete the transaction (usually 10 minutes). The 10 minutes limits any small price flux. Once the payment is made you can enable auto withdraw to fiat to your bank. With a little work, sythe could completely automate their donation system, remove all possibilities of chargebacks, and never worry about a volatile currency. I'm seriously missing the dilemma with accepting bitcoins as a donation method.
I suggested this back a while back. Got denied with no reason actually...
Support.