Origins of SRY2627?

[Adoptee]

I made a post yesterday about a theory on the origins of SRY2627, I made sure to make it clear I dont subscribe to that theory. I tend to think its proto-Celtic in origin and likely tied to the Celtiberians and Gauls. The only thing that makes me doubt this theory is how common it is among Basque people. Makes me wonder if its from pre-celtic populations in Iberia? What are your thought on this ydna group and its origins?

[Adoptee]

Id like to see someone do DNA testing on ancient Gaulish samples to see what ydna haplogroups show up