Would Afghanistan be better off if the Soviet invasion succeeded and it became an SSR

Post-Soviet Middle Eastern countries like Kazakhstan and Uzbekistan seem to be in a significantly better shape today, than most of those that remained outside the Soviet sphere of influence. The standard of living in these former SSRs is not stellar, but the population seems to be more peaceful and more enlightened, and less prone to radicalisation by fundamentalist Muslim groups.

Do you think if Afghanistan also became Soviet, would it result in a modern-day Afghanistan that is relatively poor, but more peaceful and secular than in OTL?
 
It was never going to become a member of the USSR even if the Soviet army had somehow overcome all resistance. The USSR did not incorporate the east European "people's democracies" or Outer Mongolia into the USSR; why would they do this with Afghanistan? It would just alienate the Muslim world even more.
 
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