Pick any given feature and a FS may or not support it well. RAID56 did have a major update, but still has the write hole and isn't recommended for production.

Pick any given feature and a FS may or not support it well. RAID56 did have a major update, but still has the write hole and isn't recommended for production. I think the point still stands though. There has been lots of stabilization work done to BTRFS, and anyone using production-recommended features should consider the filesystem stable.