Any blog post that espouses the virtues of btrfs as better alternative to ZFS is going to be immediately recognized as uninformed and a little embarrassing by any operator with a significant degree of experience in both technologies.

As someone who _has_ operated many systems with both filesystems - for a long time - it’s malfeasance to shepherd someone in that direction. btrfs has its uses, but there’s no comparison in terms of project maturity. Sharp edges abound (behavior at high usage, RAID immaturity, the still-extant 5.16 kernel single-core max CPU use bug, etc.)