Diversity may bring Good or Bad – everything depends on the identity of people which are categorized as a “diversity.”
If the people of diversity are a variety of the national Judeo-Christian identity (they may or may not associate themselves with the formal religious organizations), this diversity strengthen individual freedoms and responsibilities and therefore advances the national wellbeing.
However, if the people of diversity are a variety of the identity that is hostile to the national Judeo-Christian identity, such diversity is detrimental to the national wellbeing. Why? – Because it creates social conflicts which require more government to suppress them that leads to curtailing the individual freedoms and responsibilities.
That is what is at the core of current American cold civil war. Nobody is working for a compromise – everybody is working for the victory. And of course, Intellectual Judaism is working for the victory of Judeo-Christian America.