It’s a pity about the ding in the chain stay.
I suspect that ‘ding+bend’ is to allow enough clearance for the large chainrings with the very short chainstays - the chainstays need to run parallel enough to clear the 60+ tooth chainrings and then flare out to the 120 mm wide dropouts.
Normal track frame + 650c fork + backwards fork + backwards seatpost + stolen stem from unicorn = “stayer” bike?
I think i might go build one right now
Thanks LW&B, that makes sense - you learn something new every day in the world of bikes.