No, he wasn’t. He was referring to those who upheld the steady-state model of the uncreated universe, which denied the necessity of a Creator.
Thanks for setting the record straight. Augustine seems to have held to the notion of a 6,000 year-old in some of his writings, yet in City of God calls the days of creation difficult or perhaps impossible to conceive:"But simultaneously with time the world was made, if in the world's creation change and motion were created, as seems evident from the order of the first six or seven days. For in these days the morning and evening are counted, until, on the sixth day, all things which God then made were finished, and on the seventh the rest of God was mysteriously and sublimely signalized. What kind of days these were it is extremely difficult, or perhaps impossible for us to conceive, and how much more to say!" (City of God, Book 11: Chapt. 6).Regardless of his views, we do not that Augustine did not suffer fools lightly and was not afraid of God's revelation through his creation.