Teh Ebil Snorlax
izombie, uzombie, weallzombie
You're missing the point where the Oxford comma is and has been the norm for a long time now.
Also: I grant that ambiguity can often be resolved in other ways. But what if I don't want to resolve it in other ways? I like the Oxford comma because it doesn't make it necessary to jump through hoops simply to get a list right.
Just because the Oxford comma "has been the norm for a long time now" doesn't mean anything, especially since it has always been hotly debated by linguists and there has never even been a plurality of opinion, let alone a majority or even a consensus. For centuries, allsentenceswerewrittenlikethisanditwasconsideredasignofaweakwriterifscriptwasquicktoofferupitsmeaningindeedtherewasnopunctuationandonewasexpectedtoworktediouslyforconsiderablelengthsoftimetounderstandwhatmessagethewriterwastryingtoconveythisbeingespeciallyunhelpfulwhenwordsranintoeachotherinsuchawaythattheyformednewordsandonehadtoworkoutwhichwordsthewriterwasactuallyusing. But now we have spacing and punctuation. Once, colons could be used to end sentences just like a full stop, but now that would look ridiculous:
And just because you don't feel like resolving ambiguity doesn't mean that you should stick a comma where it has no business being. If someone didn't feel like punctuating at all, is that a valid argument for accepting non-punctuation as a convention in English writing? The word "and" serves the purpose of separating the penultimate and final items in a list. The inclusion of the Oxford comma is completely unnecessary, because any ambiguity created in a list can be resolved by other means. It's a lazy little mark for people who can't put in the effort of resolving ambiguity through proper means.
I'm also greatly amused by the fact that you support the Oxford comma because "it doesn't make it necessary to jump through hoops simply to get a list right", yet you claimed that omitting the Oxford comma was part of "the general trend in parts of the English speaking world towards a more "simplified" language". After all, what's more simple than a language where rather than going to the bother of reordering a list you have left ambiguous, you simply add an unnecessary comma.