Sure you can say it's part of the plan to weaken whites and punish them for hologombo, but jews have been hand in hand with degeneracy way before nazis. The early psychologists were disproportionately jewish and many started studying and normalizing buttfucking, pedophilia etc.
Freud, the most famous psych, invented the "stages of infancy developement", using terms as oral, anal, phallic, latent, and genital stages. I kid you not, these were the terms he most seemed fit to use to describe children and he also pushed the idea that kids are sexual beings.
Other psychs pushed homos, psychology had been dominated by jews and has been constantly pushing homosexuality as normal, then pushed transgender stuff and so on.
I'm pretty sure jews introduced the bbc and cuckolding thing because they tend to want it and practice it.
So why is it? Why are jews degenerate?
Libido Dominandi.
E Michael Jones Is a great resource for this stuff.
https://youtu.be/qQeRu7BUEr8
Tl;dw - the more sinful and degenerate a society who depends on vice to cope is easy to control. Control the vice control the person. Also the less they care about religion, there is a correlation between sexual liberation and non-religious values.
Then sprinkle in some kaballah and how some think that by speeding up the degeneracy and sin they will usher in the new messiah