Whoever wrote that is wrong. Loli is short for Lolita, but Lolita definitely comes from the extremely famous 1955 Nabokov book.
The term "Lolita" is used to define a young girl as "precociously seductive." It is derived from Vladimir Nabokov's 1955 novel Lolita, which depicts the narrator's sexual obsession with and victimization of a 12-year-old girl named Dolores, for whom his nickname is Lolita.
Whoever wrote that is wrong. Loli is short for Lolita, but Lolita definitely comes from the extremely famous 1955 Nabokov book.