leigh, what makes you think that R1a master race folks spoke an Indo-European language?
More over, what makes you think that the R1a originating in forest are the direct descendants of the Yamnaya people?
If you are supporting all your reasoning by the prevalence of the R1a haplogroup among the Aryan on one hand, and the R1a on the other hand, then you have to demonstrate that both populations shared the same Y haplotype subclades.
And even if you arrive to demonstrate without any possible doubt a genetic continuity between Proto-ie and R1a superior-Haplogroup, it would not extend to language in any meaningful manner.
There is a modern R1a haplogroup enriched population living closest to the probable origin of the R1a expansion from the Forest.
This population is the altai people and they do not speak an Indo-European language.
They are nearly pure R1a, they live near the spot where the R1a master race took their expansion from, the place from where the proto-turkic culture expanded from, and they do not speak an Indo-European language.
What do you make of this?
And what do you make of the R1a haplogroup subclades found in central asia among populations speaking turkic languages?
What about R1a haplotypes found in turkic group and older than the indo European expansion?
Are these also to be descended from Europe to fit your theories?
So much questions that you will probably just ignore because they do not fit your favorite explanation.
As per your convoluted explanation about R1b having been speaking some non-indo-european language; how do you explain that on both the west-central-Europe and Northwestern-iran ends of the R1b prevalence area, the populations with a high R1b prevalence speak Indo-European languages, or spoke them in a not so distant past before being “assimilated” to Turkic or basque languages?
I mean; it makes no sense to pretend that R1a nomadic warrior brought Indo European language to West-central-Europe and northwestern--iran and then just vanished completely, does it?
As per the Central Asian R1b-M478 and Southwest European M153 haplogroup situation, history of the assimilation of M478 and M153 by turks and Basques is well known.
Same with the conquest of the M478 of Kazakhstan by the R1a Xiongnu elite.
There is no way to honestly denying that.