> Btrfs does support compression, but it's obscure to access and use, it may as well not exist.

What's wrong with it?

  mount -o compress=zstd /dev/sdx /mnt

I have to wonder if bcachefs will do better in the long run than btrfs.

> Even now in 2024 btrfs is one of the slowest Linux filesystems, and it does not take long to find reports of ongoing data corruption issues.

Please stop spreading FUD, this is simply not true.

I would argue that most problems that people experience with btrfs today are because of hardware issues, btrfs is simply detecting those errors thanks to checksumming.

Yes, it is slower than other filesystems and RAID 5/6 is still unstable but blaming btrfs for everything is simply wrong.