The real purpose of this writer is to divide families. Unless a family is universally of one ideology, bringing up politics during Thanksgiving will only serve to lead to anger and severance of contact. Ditto for religion, even if the family is all, say, Catholic or Baptist, because of their intramural feuds.
That is the long term goal of the cultural Marxists, the destruction of the family or indeed any institutions not part of, or subsidiary to, the government.