I1584, West Anatolia sample dating to 3820 BC may have Steppe ancestry derived from the Southern Arc (around Armenia), which in turn was derived from the Steppes to the north.
Distance: 0.0277% / 0.02765814 | R2P
Distance: 0.0226% / 0.02262274 | R3P
Distance: 0.0198% / 0.01977544 | R4P
7.8 RUS_Progress_En: PG2001___BC_4900___Coverage_75.05%
Citation of Reich himself from the Israel Institute for Advance Studies: "Our comprehensive sampling shows that Anatolia received hardly any genetic input from Europe or the Eurasian steppe from the Chalcolithic to the Iron Age [...] The IMPERMEABILITY of Anatolia to exogenous migration contrasts with our finding that the Yamnaya had two distinct gene flows"
1st - Indo-European Hittites lived in the Bronze Age.
2nd - You know what "impermeability" means, don't you?
3rd - Conclusion: these calculations are wrong.