One of the problems I've noticed as to why the younger generations might miss the album's significance is that while they may vaguely know of the name "Pink Floyd" (or the prism cover), if their curiosity is piqued they then go to a streaming service which just suggests popular tracks (like "Time" or "Money"). I've seen this a lot on YouTube Floydian reaction videos, but oldies (or new fans) who comment on the reactions try to emphasise that the whole album should be listened to all the way through, not just individual tracks out of context (the idea of a "concept album" being a tad weird to them, as is the way each track blends into the next). Many who take up the suggestion go on to listen to the whole album and are blown away by it.