Not quite as all over the world as it seems you make it out to be.
Well, that seems to be a graphic representation of the global distribution I described in words, so I'm unsure what your point is.
If your cousin was using his genetics test to resolve a question of
recent family history, then fair play. For this purpose such tests can be useful.
My criticism was aimed more at what I'm guessing was the material supplied by the genetics testing company to describe your distant genealogy. There is absolutely no way to determine where your ancestor 30,000 years ago lived, and the Ukraine, as I said, seems to be pulled out of nowhere, since the most popular hypotheses for the origins of Y-chromosone haplogroup R1 among geneticists seem to be the Middle East and South Asia. These, too, are of course highly speculative hypotheses, since there are a multitude of ways to explain this distribution.
More importantly, a y-chromosone test can only tell you about one ancestral line. When you're talking time periods like 30,000 years, your ancestry consists of billions upon billions of ancestral lines. The chance that any specific end point contributed any DNA to you (with, in this case, the obvious exception of the Y-chromosone) is infinitesimally small.
I didn't mean to have a go at you, so sorry if it sounded like that, but I find the marketing of genetics testing companies very frustrating.