I did not equate success with finding a rich husband --- it was an example, maybe not a very good one in this particular context. The point was a bit different.
When I read about "stupid people", it looked like being smart was associated with getting some education. This is not the same, in fact these are HUGELY different things. These days education is mostly brainwashing and indoctrination, which kill your ability to think.
Also, if you look at this woman on the video below--- she is not too bright, but she is so sweet and likeable, I am sure she has to be successful in her life due to her good nature, unlike some cold condescending ones.