Filesystems are incredibly antiquated, and while I don't agree with Kent's attitude, it is very important in the long run that filesystems catch back up.

As it stands just about any enterprise system you can poke a stick at is rolling their own customised file storage system, with a traditional filesystem typically being a misshapen dead weight sitting somewhere in the middle of it - existing because it's the only thing the kernel can integrate with.

It is pretty important that this trend reverses, and bcachefs was a big step in the right direction. Unfortunate that Kent is the way he is.