The question is whether primary donate poses enough of a general risk to divers for dive ops to mandate gear configurations.
In the UK, BSAC did a review of out-of-air incidents, and their factual study concluded that hogarthian looped long hoses added to risk in out of air situations and created additional dangers. Consequently they prohibited their use in BSAC training. Members are free to have whatever configuration suits them for their own recreational diving. It was controversial within the membership because some members did use hog loops, and some probably still do. But it was an evidence led decision and the leadership went with the evidence.
I am not aware of any similar evidence led study, other than GUE/DIR evangelical dogma, in favour of the hog loop.