The parent wrote that "most organizations put security at the end of the budget list", but he did not write that it should be put at the top of the budget list. Your criticism would only be valid if he had written the latter.
The parent wrote that the "main problem" was that they put the security at the end of the budget list. My argument is it doesn't matter where it is on the budget list, it will always be subservient to the actual business of the Defender. That is, my argument is the "main problem" is that perfect cyber security Defense isn't anyone's actual business.