Well that is just crappy writing of a tweet isn't it. A full stop would have removed the potential for laughing at a their journalistic incompetence.
I would go a long way round the block to avoid putting a comma anywhere near an AND unless circumstances were a lot more constraining than this example. 
So should you use it or not? I didn't go to Oxford....
I was very grateful when Absent introduced me to the Oxford comma, shortly after I joined Gransnet
Yes, of course, your link makes that clear
Best ever example in favour thereof
For those whose lives have not yet included arguments about the use of the Oxford comma, it's the comma in a list after the word 'and' thus, for instance: What one needs to make coffee: ground coffee beans, water, water heater, and jug/coffeepot.
I nearly added mug/cup, but of course one doesn't need a mug or cup to make coffee 
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