I did prefix my opinion with "IMHO". But no. Leading commas are, in my opinion, less common in life and a distracting, surprising style for the sake of fixing a syntactic language mistake. "Enforce" might have been an overly demanding word. Enforcing when there's a newline is probably more apt or simply allowing it to prevent giving leading comma folks ammunition.

something like `[hello, world]` should probably be allowed since `[hello, world,]` feels extraneous.