zfs man page: documentation for zfs allow is confusing
manpage - manual pages
[-e] perm|@setname[,...] Specifies that the permissions be delegated to "everyone." Multiple permissions may be specified as a comma-separated list. Permission names are the same as ZFS subcommand and property names. See the property list below. Property set names, which begin with an at sign (@) , may be specified. See the -s form below for details.
It should be stated explicitly that the Specifies that the permissions be delegated to "everyone." applies only when
the -e is specified.