My response was specifically to "actually i never suggested using it instead of CPR. read it again". Dirty dog said that they should learn and do CPR instead, and you responded with that. Which you are suggesting that they use it rather than CPR, even if you didn't mention CPR yourself.and you are assuming the members can do CPR and even if some could most people are afraid to step up and do it, hence why i wrote "in case they do something wrong"
your comment "if you´re doing one, you can´t do the other" is irrelivant as i never mentioned CPR.. this is then your assumption.
Twist it how you like ..why do you think the Kodokan still teach this?
By the same logic, if I tell someone "use colgate toothpaste", I am suggesting they use colgate rather than crest, as I told them to use one and did not tell them to use the other.
Regarding why they teach this, they actually say in the video (not verbatim but close) "there are no scientific studies to support this, but we feel it works". So the reason is they believe it works without scientific evidence.