It’s a xenophobic lie, like if Americans don’t celebrate lying on positive euphemisms like “fake it till you make it” or “being a good salesman”
For what it's worth, "fake it till you make it" is far from being universally seen as positive, and (car) salesmen are seen as one of the most untrustworthy and least liked professions (just above telemarketers and members of congress). [1]
1: https://thehill.com/business/3812900-here-are-the-most-and-l...
I mean, the whole reason why people also lie in other areas. Which also explains why people of “low trust” societies might lie more rather than “it’s in the culture of those dirty foreigners”.
Most Americans that I know don't consider those phrases to reflect positive values at all. They're used disparagingly against people who really think like that.
I assure you that “the good old days” weren’t so good for my still living parents growing up in the segregated south.
As far as “not everything being related to race”, tell that to my parents who grew up in the 60s and 70s when everything was related to their race.
They literally weren’t “trusted” to drink out of the same water fountain, go to the same schools or swim in the same pool.
The only people who long for “the good old days” when “trust” was high are those who benefited themselves or whose parents benefited from systematic and de jure discrimination.
The good old days when you could live off of one income came about because Europe was recovering from a war and we dropped two nuclear bombs on Japan.
The Old Testament also offers an approach to dealing with rampant cheating in society: trust in God to provide you with what you need. It's not an exact match for classmates cheating, but David had to deal with a literal existential crisis by a king who believed falsehoods about him, and dealt with it by trusting God and refusing to kill the king (that is, using the king's methods to secure himself). Many of the psalms appear to record the emotional process he went through.
https://www.bible.com/bible/1359/1SA.15.3-23.ICB
Even with David, when David sent one of his soldiers to die on the front line so he could have the soldier’s wife, God let David’s baby die.
The Old Testament God wasn’t exactly the loving and forgive your neighbor type.
If that correlation exists, it may point to an alternative hypothesis to the GP claim that the issue is rooted in those coming from "low trust" societies and due to an internal mechanism.
By definition, being forced to drink out of separate water fountains is putting people on the opposite side - ie opposite poles.