My local AC plays 4 80s songs and maybe 1 90s song each hour. Whenever these stations drop 80s music, or most of it, I expect AC’s to emphasize on 2000s-present. Moving out of the 60s was easy for AC, moving past the 70s was fairly easy because there was plenty of material from the next decade to increase. However, AC’s still seem to be struggling finding more than several dozen 90s tracks that have a consensus of testing well. I don’t look for AC to move more in to the 90s as the 80s are decreased. They won’t abandon the 90s as long as there are tracks that test well (or nobody gets tired of “Torn” or “Iris”) but I can’t see most AC’s playing more from the decade than they do now. My Audacy AC tried adding more 90s music when they reduced the 70s - 3 songs an hour or more around 2009, but it didn’t last long and we’ve been back to the same burned out songs played 1-2 times an hour.