longer consider them ethnic Jews.
https://www.sefaria.org/Gray_Matter_I%2C_The_State_of_Israel%2C_The_Halachic_Status_of_the_Falash_Mura.17?lang=bi
“ First, they argue, there was so much intermarriage, coupled with the improper performance of conversion ceremonies, that many of today's Ethiopian Jews are descendants of non-Jews.”
Non-Jews means no Law of Return.