We certainly were pretty stupid 40 odd years ago.
But as to those Royal Marines who have been arrested I am not so sure.
I (and all of you) do not know the circumstances of their 'crime' and it is wrong to speculate. I guess we know that it is wrong to do so, so we have trawled up old arguements instead.
I suspect that all that will come out of the trial will be the reinforcement of the old wise words known to soldiers the world over - If you are going to do something naughty, make sure there are no witnesses. That goes for iphones too.