Some of the complaints in the article about INI also apply to plists. Can you atomically write a single property of a plist, in the presence of multiple concur

Some of the complaints in the article about INI also apply to plists. Can you atomically write a single property of a plist, in the presence of multiple concurrent readers and writers? Can you acl only some keys of a plist dictionary? Having keys and values as kernel objects solves those problems. Also worth noting that the registry is accessible from kernel mode drivers.