Ah, the classic pedantry.

Which is to point out that there is ambiguity in language as if this was relevant when saying the same sentence is just as ambiguous and nobody expects you to hiccup in order to signal the perfectly obvious thing that you're saying.

If you're going to mess up the structure of the list with an extraneous comma at least don't be a coward and remove the "and". How the English language allows this but frowns upon perfectly normal double negatives is beyond me.