I think maybe they check for "How to [...]" and other variations? "How I broke TLS 1.3" -> "I broke TLS 1.3"
So if you post "1850 Bloody Island Massacre" it removes the number. But it is meant to remove eg. "13 reasons why you should impeac[...]" B/c apparently the number of reasons why is too much of a cliche or bother? Idk.
Email dang haha