Dave,
Sorry I came accross that way.
But if I took on 'extra duties' (as Andrew has done), and someone attempted to complicate the 'extra duties', even though they were performed out of the goodness of their own heart; then yes; it would bug me.
It's not hard to write a cheque and post it.
Okay, Andrew could spend your cash on a hair-cut or something, but I doubt it. (He's bald(ish) to start with).
If you wish to donate, just send cash or a cheque to the address provided, soon, so Andrew gets it before the end of this month.
If Andrew spends it on heroin or something, at least we've done our bit.