Not the author, but:

> Any reason why XFS in particular?

XFS is still the default filesystem of choice for many enterprise systems. For instance, Red Hat states in their manual [1]:

    In general, use XFS unless you have a specific use case for ext4. 

There are good reasons to choose other file systems, but if you just want good performance on simple storage, XFS is a pretty good default.

[1] https://docs.redhat.com/en/documentation/red_hat_enterprise_...