Making it easy to build contracts that will accept resources and then never do anything with them, destroying the value, is a design mistake. This is something

Making it easy to build contracts that will accept resources and then never do anything with them, destroying the value, is a design mistake. This is something the developer of the contract should explicitly opt into. As others pointed out, if everything a contract did was via explicit methods, rather than transfers, this type of defect would never have been created.