In what ways would you say that ext4 takes advantage of the latest several decades of innovation, where XFS does not? Both XFS and ext2 were first released arou

In what ways would you say that ext4 takes advantage of the latest several decades of innovation, where XFS does not? Both XFS and ext2 were first released around 1993, and it is safe to say that XFS was more advanced than ext2 at that time, given that it had journaling and ext2 did not. If I wanted something actually novel, I would go for ZFS or one of its clones.