How do you know this?
Besides that, this is just a list providing burner email addresses. Adding Outlook to this list makes sense. If sites are using this list as a blocklist that would cause issues, forcing them to not use this as blocklist anymore.
Today I’ve migrated my data from my old zfs pool to a new bigger one, the rsync of 13.5TiB took roughly 18 hours. It’s slow spinning disks storage so that’s fine.
The second and third runs of the same rsync took like 5 seconds, blazing fast.