I can't really agree with you on that one. Even the Metallica that I like I rarely ever listen to anymore. It just doesn't hold up for me. Crest of a Knave is still a regular in the rotation.
I guess I just could never get used to the newer Tull, like Knave or Rock Island.
I love Aqualung, Thick as a Brick, Minstrel in the gallery, Songs from the Wood...the new stuff just isn't the same music.
If I listened to the new stuff, I'd probably learn to like it...but it just isn't Tull to me.