> I've seen it pretty widely cited and assumed it was more commonly accepted.
Where?
I think blood-and-boden arguments for territory are bad, full stop. Israeli Jews shouldn't use them to justify continuing to displace Palestinian Arabs, and Palestinian Arabs shouldn't use them to justify displacing the millions of Jews who live there now.
To the best of my knowledge, the overwhelming scientific consensus considers Ashkenazi Jews descendants of Levantine ethnic groups, with both Southern European (Roman period) and Northern European (medieval onwards) admixtures. Some people use this to make irredentist arguments, which leads to ridiculous (and antisemitic) responses like the Khazar hypothesis. But the solution is to observe that irredentism is wrong full stop, not to attempt the erasure of Ashkenazi ethnic identity.
Where?
I think blood-and-boden arguments for territory are bad, full stop. Israeli Jews shouldn't use them to justify continuing to displace Palestinian Arabs, and Palestinian Arabs shouldn't use them to justify displacing the millions of Jews who live there now.
To the best of my knowledge, the overwhelming scientific consensus considers Ashkenazi Jews descendants of Levantine ethnic groups, with both Southern European (Roman period) and Northern European (medieval onwards) admixtures. Some people use this to make irredentist arguments, which leads to ridiculous (and antisemitic) responses like the Khazar hypothesis. But the solution is to observe that irredentism is wrong full stop, not to attempt the erasure of Ashkenazi ethnic identity.