I don't disagree. Gotta backups for important data either way too!

Just talking about filesystems with checksumming (and multidevice). Any new filesystem to support these features is going to be newer.

I've had both btrfs and bcachefs multidevice filesystems lock up read-only on me. So no real data loss, just a pain to get the data into a new file system, the time it was an 8 drive array on btrfs.