As he said, an inadequate response. I would say a lazy response—and reductive. But, in the early part of the 20th century that type of research was rampant via the history of religions approach. The approach has merit, but at that time some of the caveats we now have weren't in place. For an example, read James Frazer's Golden Bough. It's great fun to read—as long as you realize that a serious reductionism is going on. The same with most of Joseph Campbell's stuff, and to a large extent Mircea Eliade, as well. Fun stuff to read and provocative thinking. But usually wrong.