Sounds like a different issue altogether but I have a mix of music anywhere from 40s to released this year that I enjoy listening to as full albums. Not here to throw recommendations at you but it seems like you're just kinda making up generalizations based on what you've been exposed to.

Truthfully in my collection the oldest albums are the ones that tend to be the least cohesive. Think old jazz and country that only got released as compilations like greatest hits albums. The concept of a cohesive album has only been more solidified in the past century, at least in the non-classical contemporary music world.