Well, it clearly worked for them.
Okay IF it has worked for them, or maybe they have just been lucky.
So how many real actual emergency evacuations have they had since this was introduced?
And they all went perfectly?
Just seems to me to be a reduction in safety standards without even gaining any cost saving or anything, the same number of cabin Crew are on board (are they not?) so why not use them as before?
What next, why bother with all the cockpit checks, make one Pilot do them on his/her own so they will do them properly.
What about Engineering, why insist on two LAMEs checking any work on primary flight controls, just use one to make him/her do it properly.