The lifecycle of RHEL is minimum 10 years (longer for some customers). In 10 years time, disks will be considerably larger than what ext4 is comfortable with. I know that ext4 claims to support large disks, but only XFS is actually tested at these levels and known to work properly.
Not only tested and known to work, but tested and known to work for many years now! I first learned of & deployed XFS for volumes of hundreds of TB back in 2009? 2010?
