LOL! My mind was so in the valve cover when I clicked on this.
I agree that this is a rust hole waiting to happen. I'm glad you posted this as I forgot to clean this during my fall maintenance. When I've cleaned these hard to see and get at places, after power washing them out and use spray wax to help seal the finish and hopefully reduce the chance of moisture making to the metal to get the rust cancer started. Not sure it helps but it makes me feel like I'm at least trying.