While we're complaining , it's weird that they don't have the top tube join the head tube higher up since they've already gone to a sloping top tube. It's one thing to need a tall stem on an MTB conversion because the geometry paints you into that corner, but...

OTOH, the massive thread in C&V indicates there is interest, and perhaps there is a rich market to be tapped. After all, it wasn't all that long ago that to get a fixed-gear bike, you either needed to find a track bike or to convert an old 60s/70s/80s road bike. Now, it's easy to just buy one anywhere.