I don’t hold any individuals accountable for their countries past. I’m German Russian (as in my parents are both ex-soviets from Moscow, but I was born and grew up in Germany and still live here).
Why would I hold any Germans accountable for what their (great)grandparents did during their attempted Genocide against most peoples of eastern Europe and destruction of the USSR, as long as they don’t expect me to feel sorry for the (Wehrmacht) oppressors, rapists, pillagers and thugs my great-grandparents rightfully shot and took as POWs to build Siberian land bridges and what not LOL.

Holding current generations accountable doesn’t make much sense, but it is their legacy and how they deal with it is not crucial, but essential.

(Like Japan und Turkey also come to mind as strong negative examples; Japan much more so though)

I was more talking about societies from a macro POV. And there is a distinction IMO between a society rising from the rubble of a destroyed past (like in Germany, tho arguably the FRG never properly denazified) and still upholding that legacy and keeping it alive and well like in the USA.
The USA served as one of the primary inspirations of German fascism BTW, “Manifest Destiny” became Lebensraum, their concept of racial segregation was to be admired (and brought to its logical conclusion) and their exploitative industry to be emulated (said industry also funded the hitlerite fascists; e.g. Henry Ford was awarded the highest prize available to foreigners by Hitler himself)

The USA is built on the corpses of genocided peoples and as long as this grotesque concept exists in that form, justice will be waiting. The least they have to do is to give the land and equal rights back and establish commissions to remedy the societal legacy brought by centuries of racial oppression, reparations are not enough. (a lot of it applies to former empires and existing colonies as well)