This was an interesting article, but it did not state clearly that it
was talking about autosomal DNA (which is more accurate in the
"short-term", since it recombines).
I think it was misleading in
that it implied that these autosomal results disprove various
hypotheses about how (Y-DNA Haplogroups) R1b, R1a, and Q found their
way into the European Jewish genepool.
All it really proves is
that in "genealogical time", Jews have formed somewhat of a closed
genepool. The more distant Y-DNA origins are a separate matter, and the
article could have done better in explaining this.