Actually, if you had read Razib's writing you would know that the Khazar hypothesis is not without (albeit slim) genetic evidence. The early Ashkenazim of Moravia had East Asian ancestry, for which the Khazars might have been a vector of transmission.
Shlomo Sand's "The Invention of the Jewish People" would be a good addition to the list of modern heretical books.
No. It is simply antisemitic nonsense. If you have read Razib's writing you understand that Ashkenazi Jews do not have Turkic ancestry.
Actually, if you had read Razib's writing you would know that the Khazar hypothesis is not without (albeit slim) genetic evidence. The early Ashkenazim of Moravia had East Asian ancestry, for which the Khazars might have been a vector of transmission.