The larryvsharry website seams to suggest they do consider singlespeed to be a thing in relation to there bikes.
http://www.larryvsharry.com/buyers-guide/
Where does it say that? In the mention of one cog, one chain and one chainring? I am pretty sure that they are referring to the cog on the internal gear hub.
scroll to the bottom of the page.
@Simba started
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The larryvsharry website seams to suggest they do consider singlespeed to be a thing in relation to there bikes.
http://www.larryvsharry.com/buyers-guide/