Goldberg's viewpoint is that we live in a miracle about to be unwound by base, tribal, human nature. Your stance that we live in godless times with our Judaeo-Christian heritage being systematically suppressed, while accurate, doesn't seem out of line with Goldberg.
If I had read Goldberg's words without knowing the author, they would still ring a note of veracity, even though they were scripted by a disingenuous Never Trumper.
I agreed with Sexton’s and Goldberg’s overall analysis, but think that they did not discuss the underlying cause of the ingratitude. That cause is the Leftists’ inordinate sense of self and their out-sized sinful pride. That is what causes them to be ungrateful. Their self-centered ego makes them think that they are entitled to more than what they have been given, and so they are ungrateful. They do not believe in the fallenness of mankind, and especially not of themselves being fallen, sinful, corruptible individuals.