I don't actually know the history of JavaScript style, but I feel like this assertion is likely trivializing something more complex: >The reason you were once

I don't actually know the history of JavaScript style, but I feel like this assertion is likely trivializing something more complex: >The reason you were once told trailing commas are bad is because they are invalid in EcmaScript 3. I can imagine plenty of reasons people would have for avoiding trailing commas even after they became valid syntax. The whole "consistency" section also feels like unnecessary snark.