Andrew is a professional misunderstander. He dotes on typos and loosely worded phrases. He is quite smart enough to discern other people's intentions, but chooses to make the worst possible reading.
Quoting Darwin on genetics is a dishonest tactic, since Darwin lived before genetics was invented. Darwin was aware of two possible implementations of genetic information: discrete and blended. He observed blended traits and therefore believed that is the way the underlying implementation worked. He was wrong.
It remains a fact that genes detrimental to individuals can be preserved because they benefit a population.