If anything, isn't that an informal solution? It relies on other people to complain that they dislike the sentence, without being able to point to any hard-and-fast rule.
The hard and fast rule is that repeating a word right next to itself is generally frowned up. It comes up with “that” a lot, like “he said that, that led to something else”. Sometimes people are doing something clever with the words, but it’s usually just poor English.
