It’s unclear why Russia is exploring the import of migrants from much more fundamentalist and dangerous Afghanistan who struggle to assimilate and integrate while scrutinizing migrants from much more secular and safer Tajikistan who have a history of assimilating and integrating into new societies.
A majority of Afghans are very hardworking and peaceful, as I have seen thousands of them in Pakistan, India or EU.
Because most of them like to hold on to their tradition and faith doesn't make them dangerous.
Thounsands of men and women on the hippie trail (1950-1970s) would testify the peaceful and welcoming nature of the Afghans.