That's not even a speculation, because we find the exact same artefacts entering the Carpathian basin with a layer of destruction. Among these the renowned Cimmerian iron daggers, new horse gear and larger horsebreeds. The admixture is there as well, with increased steppe, East Asian and Caucasian. So there is really nothing to debate about here. The Cimmerians, or at least elements from the Cimmerian sphere, were in Central Europe and had a major cultural impact up to the development of Hallstatt and the spread of iron metalworking.
I quoted the paper before:
https://anthrogenica.com/showthread....l=1#post878832
The archaeological formations of Chernogorovka and the Novocherkassk being associated with the Cimmerians most consistently and their tools and artefacts entered Central Europe with destruction and population movement. Nothing ambiguous here at all. If anybody doesn't believe the papers I quote, they can check Wikipedia:
https://en.wikipedia.org/wiki/Novocherkassk_cultureThe Chernogorivka and Novocherkassk cultures (c. 900 to 650 BC) are Iron Age steppe cultures in Ukraine and Russia, centered between the Prut and the lower Don. They are pre-Scythian cultures, associated with the Cimmerians.
In 1971 the Vysokaja Mogila kurgan (graves number 2 and 5) was excavated in the Lower Dnieper River basin. Grave number 5 dates to the late Chernogorivka period (900–750 BC) and grave number 2 to the younger Novocherkassk period (750–650 BC).
The Novocherkassk culture expands to a larger area between the Danube and the Volga and is associated with the Eastern European Thraco-Cimmerian artefacts.