That seems overly nitpicky. It's about a new technique for beam lithography and achieving a smaller feature size than previously possible.

The "1000 TB" is just PopSci extrapolation at this point. If it does happen, it'll be neither a CD nor DVD.

It's actually about optical discs. But "CD" is the vernacular for optical discs. Kind of like "hard drive." Modern laptops don't have hard drives--they have solid-state drives, but people still refer to their storage as a "hard drive."