My point with regard to Space Dogfight is that I don't think it's distinct enough from Old-School Dogfighting, not that it's not distinct enough from Space Is Air.
I'm not sure that's an argument against it, since they're basically coming from two different places. Space Dogfight
is essentially a part of the genre now, and appears even in works with relatively realistic spaceflight physics. Old-School Dogfighting
, on the other hand, seems to be more about the "older forms of aerial combat were cooler" attitude.