>>19932A self-healing system is not a perfect system. The process of self-healing still consumes cycles, rendering the system less efficient at its primary function overall.
No matter how many self-healing systems there are, even if their resources are well-distributed, tricking an entire system into overusing its own resources on itself could freeze the system while another attack takes place.
If anything, a poorly designed automated system could actually be more harmful than a passive system in that it could be used to overwrite itself with self-replicating code.