I completely agree that the Greeks and Romans are the founders of Western civilization. The point is that both the Greeks and Romans inherited their languages (for some people language defines culture) from Indo-European-speaking invaders. For Nordicists; this means that the PIE invaders are consequently the founders of Greek and Roman cultures as well.
I find Nordicism pathetic because the invaders mixed with the local population. No culture developed without this mixture. The Indo-European speakers themselves were also constituted by the mixture of EHG and CHG. There is no 'pure population', there is the natural movement of mixing between human populations.
There seems to be a silly intrigue between Northern Europeans and Southern Europeans. Northerners feel like the founders of it all as the Indo-European invaders dominated the farmers and modified their languages and cultures, while Southern Europeans claim that the south was indeed civilized. As a Brazilian who looks at all this from the outside: it seems like a big waste of time. Indo-Europeans and farmers mingled everywhere in Europe, it no longer makes sense to think of any modern European civilization as essentially divided. Genetic and cultural mixing happened everywhere. That is all.
Unfortunately, this type of Nordic racism also happens in Brazil. Brazilians of German or Ukrainian descent feel 'whiter' than Brazilians of Portuguese and Italian descent. Of course, here in Brazil all this is taken much less seriously, but it happens.
this is a debate that was understandable in 2018/2019 when southern european genetics was seen as only EEF based. Reality is another. We now know that ANE/ANS is made of a mix between central mediterranean dna( proto aurignacian) proto gravettian ( from south of the caucasus and expanding into the eastern european plain mixing with the aurignacian) and east asian.
We now know that WHG is a southern european genetic marker and CHG is not northern european either.
The idea that " northern european are more IE than southern european " is bullshit given the fact that Sredni Stog was a mix between ukraine neolithic cluster and CHG like cluster with PIE coming from the former which was around 70% WHG and 30% ANE. There is no west eurasian genetic marker that is northern european in origin. WHG, and EEF are all southern and ANE as I said is southern european, levant + east asian