Lately, it seems that Israel cultural anthropologists etc. are very interested in finding random people at the far ends of the earth, then slapping those newly found people with a '10 Lost tribes' label and bringing them to Israel. I love my people, but in reality how many of these Ethiopian/ African/Thailand etc. immigrants are truly Jewish?
Also Jewish identity is based on matrilineal descent or conversion; not on some archaeological evidence. You can have all the archeological and DNA evidence showing that your zaide is Moshe Rabbeinu, but if your mom is not Jewish, then you are not Jewish. So how does the Israeli Rabbinate justify such blanket assumptions that a particular group is Jewish?