Yeah, the author didn't include Score Voting. He replied to me:

New Scientist asked me to write a piece on the mathematical
paradoxes associated with elections. I had 1500 words to
play with. Many items were passing references
to alert readers to interesting related topics. I wasn't
writing a technical treatise.

Any interested reader can
get the full story from the Internet. Readers
should also understand that the tone of the piece was not
a scholarly critique of electoral systems, but a bit of fun
with some maths in the context of a coming election.

They will also understand, I would hope, that subeditors
at magazines like to spice up the narrative a little, and
that the extent to which the various systems are 'unfair'
is often minor - as the examples show.