> it's one of the defaults so is ext4.. > and because it can be grown online How this is different from how resize2fs can resize a mounted ext4 filesystem?

> it's one of the defaults so is ext4.. > and because it can be grown online How this is different from how resize2fs can resize a mounted ext4 filesystem? xfs may still be better than ext4 for some workloads, but "it's there" is not a reason why someone should use it.