It's got a retro feel because the blips and bloops bring people back to the NES and GB days; but when used as a medium instead of a genre then you have to re-evaluate. Chipstep and modern fusions aren't retro because those are new genres. I'd argue that there is a genre of "chiptune" though; for instance I would say that Virt's style of composition is uniquely "chiptune" as far as genre goes.
If anyone asks though; chipmusic is a medium, method, and instrument rather than a genre.