Comment by retsibsi

Maybe I misunderstand the analogy, but in this scenario it seems that the orphan crushing facility's donations to the orphanage are an unalloyed good. Their motives are bad, and they are bad, but their donations to the orphanage are causing more orphans to be taken care of and fewer orphans to be crushed.

Personally, my worry about anonymous donation matching would be that the anonymous (to me) funder is influencing the recipient (to whom their identity is known), and without knowing who they are I can't know the nature of this influence or whether it should cause me to reconsider my support. But I don't see any extra reason to care about anonymous donation matching in particular, as distinct from any other funding whose source is opaque to me.