Subjectively, I experience the first four albums as dated and the rest feel reasonably timeless for me.
I realize that my experience probably isn't objectively accurate - I'm thinking Gen Z would hear TJT and AB as dated.
I wonder if they would feel the same about ATYCLB though. I feel like the current "alternative" sound started at the turn of the century and hasn't changed much or at all in 20 years.
It's werid because the overall sound of the 90s is way different from the 80s, which was way different from the 70s, which was way different from the 60s, which was way different from the 50s. But I feel like anything in that genre from the last 20 years sounds like it could have come from either decade.