I guess we have a different tolerance towards English usage. To be honest, I am not particularly convinced that commas must be used in the sentence I wrote. The original sentence is somehow different in my view as it contains errors ("your" instead of "you're", "isolateing" instead of "isolating" and the absence of capital letters for "we" and "tom") that are not socially acceptable.
I believe that the usage of the Oxford comma is stylistic in nature. It is not technically wrong to omit it even if the sentence is clearer by using it. If a sentence is unclear, then rephrasing it might be a better option than inserting an Oxford comma.