Content designed for 8 or 24 players gets synced to the maximum item level of the expansion, so the content released closer to the beginning or middle of the expansion ends up in this state where you skip all of the mechanics, nothing hurts and it's hard for veterans to see content that used to be fun no longer requiring you to be alert. The stat squish has helped this in some fights, such as a lot of the alexander fights, but it's still a problem in some of them.