Yes, I think we're probably saying the same thing really.
To the Samaritans, their entire charitable purpose is around suicide prevention - so if an advert does a good job of promoting that message, then it is successful from their point of view.
This is their charitable purpose from the Charity Commission website:
(A) TO ENABLE PERSONS WHO ARE EXPERIENCING FEELINGS OF DISTRESS OR DESPAIR, INCLUDING THOSE WHO MAY BE AT RISK OF SUICIDE, TO RECEIVE CONFIDENTIAL EMOTIONAL SUPPORT AT ANY TIME OF THE DAY OR NIGHT FROM APPROPRIATELY TRAINED SAMARITANS IN ORDER TO IMPROVE THEIR EMOTIONAL HEALTH AND TO REDUCE THE INCIDENCE OF SUICIDE; AND (B) TO PROMOTE A BETTER UNDERSTANDING IN SOCIETY OF SUICIDE, SUICIDAL BEHAVIOUR AND THE VALUE OF EXPRESSING FEELINGS WHICH MAY OTHERWISE LEAD TO SUICIDE OR IMPAIRED EMOTIONAL HEALTH.
So it meets those purposes, even though I agree it could be improved in other ways.
Whereas if HM Government were creating an advert then one would hope that they would be much more conscious of how it would impact on different groups, including women, from the outset although I wouldn't count on it these days. I believe there is still the need to do an equalities impact assessment for new initiatives?