The db example is bad because most people in db and data world agree mongodb is not a great choice anymore. In fact mongodb today has actually adopted a lot of the characteristics of a sql db.

I didn't have this impression at all. Dwarkesh came across as knowledgeable enough about the subject and with enough confidence and energy to ask meaningful, challenging questions of an expert. There was some real and productive disagreement and I think this made for a more interesting podcast than most.