[hunter2_]

The loudness war (in the usual sense of the phrase) on CDs was to not seem weak against other releases. The loudness war (if I may use that phrase very liberally now) on analog media is to not seem weak against hiss and surface noise. The desire to compress and limit dynamic range does exist for both, but for these different reasons.

However, a huge difference is that on CDs you're up against a fixed maximum (0 dBFS) so all peaks are equal, which is fatiguing; on vinyl you're up against the adjacent groove, so your maximum amplitude any given moment depends on the amplitude of things in the recent past and near future! Ways to optimize for this are prevalent, amazingly, and the result is less fatiguing.