You're going to have to do better than that, because everyone with a functioning left brain knows he is absolutely correct. When an entity takes a tax deduction, it is doing something the legislative branch wants it to do and encourages through the positive encouragement of a tax deduction. 'Do what we want you to do, and we will reward you by taking less of your money.'
A loophole by contrast is something that was not intentionally placed, at least not intentionally by most of the legislators who voted for it. A loophole allows an entity to reap the reward (keeping more of its money) without engaging in the desired behavior.
For example, a mortgage deduction encourages home ownership among those not rich enough to pay cash for a home. Government encourages this behavior by allowing the home owner to pay lower taxes. If one found a legal way to pay cash for a home and still claim a mortgage deduction, or claim a mortgage deduction for your new $300,000 cigarette boat because it has a Port-a-potty and a blanket, those would be loopholes, because the government has no desire to subsidize these things.