If this is your explanation for disparate outcomes, it does not strike me as a good one. No population has gone through more stress than post-war Jewish immigrants yet their children were the most successful cohort in America. Chinese immigrants were subjected to horrific racism and yet they are far more successful than gentile whites on average.
Whatever the explanation, Lysenkoist propagation of intergenerational trama is unlikely to be correct, though it may prove politically expedient.