If that were true, then it would be reflected in crime stat jumps during periods of recession, but it isn't.
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> Weinberg and his collaborators Eric D. Gould of Hebrew University and David Mustard of the University of Georgia examined young males with no more than a high school education—the demographic group that commits the most crime—they found that average wages and unemployment rates were directly linked to the incidence of property crimes. [2]
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> Crime has increased during every recession since the late 1950s, sociologists said. [3]
[1] https://www.weforum.org/agenda/2015/03/do-recessions-increas...
[2] https://www.scientificamerican.com/article/do-recessions-inc...
[3] https://www.google.com/amp/s/mobile.reuters.com/article/amp/...
Wait, if the gap in wealth inequality has been doing nothing but expanding... why does the crime rate do nothing but fall? With very few, and very brief, exceptions - this is the case.