The author’s conclusion is based on a false dichotomy.
The fact that the Britons’ story doesn’t hold water DOES NOT prove that they ARE NOT the descendants of the Israelites. All it proves is that their story doesn’t hold water.
The only way to prove that the British ARE NOT descended from the Israelites is to prove they ARE descended from someone/something else, and that requires genetic/DNA proof.
This flaky bit of pseudo-journalism goes nowhere close to that.
How would you get genetic proof. The Nation of Israel was peopled by tribes other than those of Judah..the Jews. Related distantly, but then again how about modern day Jews prove they are from the Tribe of Judah?