Earlier quoted context omitted.
You are right. No one person can know everything about everything. Heaven's know I defer to experts if I know I can trust their opinion. The issue is trust. And US has about only one institution left that people seem to trust. Military. It does not bode well for the fate of the republic.
I wouldn’t agree that Americans universally trust their military.
I don't know that "people" in the original argument equates to "universally", but the only institutions that a majority of people have either a "Great deal" or "Quite a lot" of trust in are the medical system (just barely, 51%), the military (72%), and small business (75%). So small business is trusted more than the military, and basically nothing else is.
6% of people have a great deal of trust in Congress and 9% in television news which I guess are around the percentage of dentists who recommend sugared gum to their patients who chew gum.