McInerny is what you might describe as a "Sola Aquinist". For him, Aquinas is the navel about which Catholic theology turns. And while I have no axe to grind with Aquinas, he isn't the only Doctor of the Church. McInerny's single-minded focus on Aquinas tends to express itself in the form of a deflationary attitude toward the contributions of the early Fathers of the Church, as well as of theological developments of the twentieth century, particularly those of the school sometimes called "Nouvelle theologie" or New Theology. Pope Benedict is a member of this school, as are other great modern theologians such as Congar, De Lubac, and Danielou. Pope John Paul II had deep affinities with this as well. These theologians have emphasized the early Fathers (though they, of course, don't in any way reject Aquinas).
So what I was getting at with my remark about Thomists of a certain stripe is that there are certain Thomists who tend to regard with some suspicion (and sometimes outright contempt, I'm sad to say) any theology other than that of Aquinas. As you can probably tell from my frequent mention of them, I have an especially deep fondness for and interest in the Church Fathers, and consequently McInerny's attitude gets under my skin a bit.
That's all I was getting at. He's certainly entitled to his interests, and Thomas Aquinas is far from a bad interest to have.