[rectang]

The difference is the delivery medium. It has always been in the interest of producers for individual recordings to seem louder relative to other recordings in the same genre, and that is still true today. However, a level matched experience is better for the consumer, so apps like Spotify apply perceptual loudness metrics and turn down maxed recordings.

That kind of level matching didn't happen with consumer CD players or vinyl turntables. Producers have to use different techniques to stand out in an automatically level-matched environment.