What if they simplified it so commas were ignored and thus optional. Then they are purely for readability, allowing for whichever approach a project preferred a

What if they simplified it so commas were ignored and thus optional. Then they are purely for readability, allowing for whichever approach a project preferred as their standard (no commas, traditional SQL, with leading commas, with trailing conmas). I could have missed something but I don't see anything that would be impossible to parse without commas so long as there's at least one character of whitespace separation.