I see no downside. If the 40s call I'll tell them we had a black POTUS and legalized gay marrige and watch their brain leak out their ears (if you don't see the liquid within 15 seconds, strike the cranium with a tire iron to unstick the ear canals)
They only stopped because the people weren't able to learn intuitively. A lot of the most impressive and essential things we do rely on this unconscious ability. Turns out they didn't just want sex dolls, but competent slaves. People with prefrontal lobotomies can't properly care for themselves, even if they are compliant.