The "other person" (only mention of NTFS) is me, here:
> while MSFT still treats ReFS as unstable, and Windows servers still rely heavily on NTFS.
By this I implied it's an embarrassment to MSFT that iOS devices have a better, more reliable file system (AppFS) than even Windows servers now (having to rely on NTFS until ReFS is ready for prime time). If HN users and mods didn't tone-police so heavily, I could state things more frankly.
I was asking, because didn't know, and I thought the other person was implying that it did.
I know what copy-on-write is.