Yes I did read it years ago and again today?

If you read my original point you'd see I said "weird DRM glorp" which you and other have tried, and failed to only closely parse "DRM" so that you could nitpick poorly.

It is integral and part of DRM systems and certainly "weird DRM glorp" for an actual close reader.

DRM is not just "I cant watch X movie because DRM" even if that is the statistically prevalent understanding of DRM.

Its a suite of technologies of which watermarking is one of.