Like I get that they don't want to have too many Eastern European in the UFC since their main audience is America and Easterners don't sell, but why don't they just release the bad ones they do have?
They were quick to sign someone like Khadis Ibragimov or keep guys like Roman Kopylov on the roster but pass on guys like Rustam Kerimov, Mukhamad Vakhaev, Albert Tumenov, Mateusz Rębecki. Even Mateusz Gamrot vacated his belts in 2019 and was a free agent, but eventually signed a two fight deal before UFC finally budged.
Not even Brazilians have this much trouble getting signed and I would say they usually aren't draws as well.