My read on those was basically that the classic filesystems are hopelessly broken and we need ACID guarantees in the next-gen filesystems, like 20 years ago.

Not saying all of them were about FS TOCTOU bugs but once I got to these, that was my takeaway.

Obviously just using Rust cannot fix _all_ bugs, and I reject any criticisms towards Rust rewrites that tear down this particular straw man (its goal being to make it impossible to argue against). That's toxic and I get surprised every time people on HN try to argue in that childish way.

But if we can remove all C memory safety foot guns then that by itself is worth a lot already.

Losing decades-old knowledge on how the dysfunctional lower-level systems work would be regrettable and even near-fatal for any such projects. That I'd agree with. But it also raises the question on whether those lower-level systems don't need a very hard long look and -- eventually -- a replacement.