lack of any attestation kills all PIE claims
whereas sanskrit is a solidly real language with a lot of evidence that it dates back to 4th millennium BC or even much further back for the rg veda
evidence that is vociferously ignored or censored in the west for various reasons
so the tactic of making sanskrit a daughter language of PIE is not accepted
You seem to be a bit emotionally attached to this? I for one like imagining that such a vast and diverse bunch of peoples may go back to just a couple of families crossing deserts, jungles and plains together.
how europeans got their language is not our problem
neither the yamnaya r1b z2103 nor sintashta r1a z2125 amounted to much in world history and the sintashtans were just scythians or what we called shakas
these geneticists are just looking for keys under the streetlight ignoring actual evidence
rest of the dna debate is massively hyped propaganda and search for relevance and funding