How does a raft administer cpr?
But there's always a limit in capabilities - providing better access to some help is clearly still of benefit, providing faster access to limited capabilities over a wider area may be a better end result than the same resources being used for higher capabilities, but more limited reach.
Really we need to wait and see what the data shows (if they review it), as the article states for now they haven't performed any rescues.
Maybe many years from now when drone rescues become commonplace. But it's not exactly something to worry about at the moment.