Cabin crew (
smartphones with legs, tabloid readers, avid shoppers, "need to sleep" on layovers, or middle-eastern dodgy individuals) are much more a safety risk than pilots !
Where do they come from ? how have they been recruited and checked ?
If they lose their job, what investment will they lose ?
How does it look (passenger point of view) to have CC checking pilots ?
Will they have priority to operate the door switch, in case of disagreement with remaining pilot ?