Hip Hop Skid Bikes / Hipster Sleds / HHSB

Just a optical illusion -

Huh. Weirdly, the Rotor site does suggest a Q ring can be used fixed:

Will they work on my MTB singlespeed, or track bike?

Yes. MTB Q-Rings can be used for MTB singlespeed applications. We've also successfully tested and are currently producing select models of 144 BCD Track Q-Rings.

I'm baffled as to how this works.