DC Econ: The Paradox of Household Income

How does the change in the marriage rate for people with low levels of education relative to people with high levels of education affect measured economic growth for the middle class? Those who receive lower levels of education are less likely to get married and pursue higher paying jobs than those who receive higher levels of education.
If the poverty rate didn't change very much when there was economic growth in the recent past, does that mean it will not change much if there is growth in the future? The poverty depends on more than just economic growth, meaning we can't know just from one statistic.
Why does Roberts raise the possibility that lower marriage rates might be caused by the poor performance of the economy? Lower marriage rates leads to less money being earned per household, meaning that those who are married and both working again more money and are in the upper percentile.
If family structure had stayed constant, poverty would have fallen by 25% in the example in the video. But it actually fell by only 4%. Is one of these measure right and the other wrong? How would you decide? Due to a fallen world, broken families are a possibility and must be considered; a measure that accounts for divorce would be beneficial in measuring poverty.