What do you think the best way for white guys to get used to/cope with to their "cultural heritage fading"?
A very good question. My advice is to look for the positive side to it.
Yes, your white cultural heritage is fading. But another culture is taking its place. Black music, Black art, and Black beauty standards are increasingly being celebrated. White culture is downplayed or recast with Blacks as the heroes.
All of this is a good thing. White culture has for far too long enjoyed an unjust hegemony. Through force, Europe and America has dominated the rest of the world, forcing our culture and values down their throats.
But now this use of force has been delegitimized, and in the free marketplace of ideas Black culture is winning out. White culture is passé. If you're white, this can hurt.
Instead, think about all the joy this is bringing to Black people. Think about the little Black girls enjoying seeing a Black Ariel in theaters. Think about the Black teenage boys knowing they will one day kiss a white girl without having to worry about a lynch mob.
Celebrate the demise of white culture. The world will be a better place without it.