Do they mention (the new) Starbuck anywhere in those sections? Because, damn, if anyone in modern TV or film fits the Mary Sue archetype...*
*I say this as someone who loved Starbuck. Nevertheless...
The real reason that so many characters can be made to fit the "Mary Sue archetype" is that no such thing exists - in truth it's a lazy, poorly-thought-out and beat-to-fit notion conceived decades ago without reference to any necessary understanding of literature or creative process and simply intended as a short-hand put-down of some fairly obviously bad fanzine writing of that day.
That it's persisted is simply a testament to a certain kind of fannish mentality that embraces jargon, in-jokes and slang as means of identifying other members of the group.
Again, the principle is simple: a group of people set apart may be a club or a ghetto, and the simple way to prove that you're a club is to keep someone out.