The “Department of all things Flying” in the MoD ( the MAA) classifies Cabin Crew as aircrew, but the “Department of Badges and Hats” takes primacy.
I can accept that this situation just ‘came about’ and wasn't designed, but if a review of “non traditional” aircrew is taking place then surely Cabin Crew must be in scope? It would be shame if the status-quo were maintained ,particularly if the reasons were fundamentally those of ingrained snobbery and (misplaced) elitism regarding rank/trade/branch that some posters are exhibiting.