Not even. Proto-Indo-Europeans spread west and east and are the ancestors of populations in Europe but also Iran and India, with languages like Farsi, Hindi, and Urdu all belong to the Indo-European language family. So the peculiar thing is really that @MalcolmTucker thinks you can neatly define what 'ethnic European' means, cause being fairly familiar with the topic, I am pretty sure you cannot meaningfully define that without using a lot of arbitrary limits in terms of which parts of groups and which time periods count and don't count.Lot of words to say white.
And yes, it would be interesting if @MalcolmTucker responded to those comments instead of just stating his disbelief at their existence. Cause that just makes it seem like he doesn't actually know what he's talking about and just repeats other people's talking points.