I didn't realize the link but I agree with the decline in trust.

One obvious axis is that in 1995 (I came to the US right around then) the country had a high church attendance rate, racial homogeneity, % of people who are parents, and % of people who were born here.

In the 30 years that passed all of these numbers had become significantly lower and obviously each factor on its own contributed to a decline in societal trust.