Maybe, but this guy is Israeli by-way-of Istanbul.
Rabbi Chelouche (head rabbi of Netayana) was in the paper recently saying, in the offical opinion of the Orthodox Rabbinate, Karaite are Jews and did not need to undergo even a token circumcision to be halakhically Jewish -— but were to be considered tinok shenishba (prisoner/kidnapped babies), at worst.
Pretty much got there because, even if not Jewish, the Karaite oaths taken (coupled with an existant circumcision) would be sufficient for a gentile to have converted, so certainly good enough for an arguably “half-Jew.”
Not sure about that. I would not necessarily accept this one opinion anyway. An "apikoras" is much more serious an issue than this. It would take a bais din to figure it out.
Pretty much got there because, even if not Jewish, the Karaite oaths taken (coupled with an existant circumcision) would be sufficient for a gentile to have converted, so certainly good enough for an arguably “half-Jew.”
Also not necessarily true. Conversion is more complicated than merely having a bris and taking the oath. "Half Jew"? It's like being "half pregnant"; one is either a Jew or not.
Anyway, it is an interesting subject- and a long winded one. :)