It's utter c***, as always. Where's the BB that would have actually impacted Italian areas? I could go on and on with other examples, but what's the point?
You can fiddle with this, choosing whatever genomes you want that will give approximately the results you're after, unless, like Kurd, you do it honestly and in a transparent manner. In this instance, that would include the various models which would give decent results.
Where on earth are your critical faculties?
The only thing worse than his stats on southern Europeans is your interpretation of them.
Yes, a lot of Italian genetics is EEF. 74% in my case, 70% for some more Northern Italians, 71% in Albanians, I'm sure Spaniards are close to that as Basques are at 70%. Greeks are way up there too. With Greeks, it seems a lot of it has been present since the Mycenaeans. Since we don't have any ancient Italian genomes except Otzi and Remedello, all of this certainty as to when or with whom it arrived is misplaced.
Whatever movements from the southeast affected Italy post Neolithic are not unique to Italy. They have to be considered in the broader context of movements into Southeastern Europe, i.e. the Balkans and Greece. Also, to some extent, in Iberia, as the J2 there might attest.
In my own case, what I do know is that I am almost 40% Western European farmer. That component is lower in the southeast of Europe, and in Anatolia, where it has been declining since the Chalcolithic. I highly doubt any movement from Anatolia after the early Bronze increased it in me. Then I'm almost 26% steppe, close to what people get in the Balkans, including their "Slavic" ancestry. We're up to 66%.
Then I'm 28% Eastern farmer. How the heck do you know when they arrived in my area given we have no ancient dna? These are the kinds of speculations which put autosomal analysis into disrepute. Now, could some of that "eastern farmer" be from such a migration, or perhaps from Greece? It's possible, but just as possible if that's the case that migration from LBK type communities or from the Balkans, or by the Celts could have done the same thing. Some of my ancestors weren't called Celt-Ligures for nothing. There is no way of knowing until we get ancient dna.