That force is America relationship culture which overwrite the cultural source code and suppresses biological instinct. The Irish Catholics in Europe try to just be good and are a bit in the shadows.
Kind of like saltpeter in the food supply that suppresses ardor and maternal instincts in populations. While in American a lot of people talk about religion yet have embraced the aggressive boastful American imperial business culture. So when you are searching for Irish girls I can highly recommend rather than an American dating site with an Irish component.
I like the Irish and I do not have a drop of Irish blood in me. I am writing to the music of Hayley Westerna (a cutie), a modern Enya.
Those in diaspora embrace nationalism (I despise nationalism as it has caused so much suffering).
I can only conclude for a cultural memory to be erased and not transmitted from generation to generation in a meaningful way that it influences the depth of an individual, needs a very strong force.
They have been here for several generations and take pride in how hard their grandparents had it (fleeing from the potato blight, not the great Irish potato famine of the century before), but they themselves have lived nothing but a life of ease.
A cushy American lifestyle with the cultural ideas of feminism and a ‘strong woman’ who stands up to her man on a daily basis.