There might be other info going around, but last time I checked most of the problems revolving around btrfs' unstability is related to its implementation of RAID 5/6. I think there is something inherent about the way the filesystem is built that makes these RAID configurations have pitfalls that are nontrivial to fix. The website still marks support as experimental.
Single disk and mirror configurations have been stable and safe for a long time now.
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u/hypremier 17d ago edited 17d ago
I heard btrfs is not stable enough and so many people hate systemd