Your first argument makes no sense. People from totally different cultures don't suddenly integrate. In the US, Jews originally ran the mafia when they came over, then Irish/Italians. Was that an indicator that America's model failed? And that jews/irish/italians would never integrate into it and never have high trust neighborhoods? Or that integration is a process (that you aren't allowing for in your argument)?
Not having moms working multiple zero hour jobs to try and barely survive would be a huge plus for high trust society. They would better socialize their children (which would reinforce a high trust society). They would better account for their children because they would be present (a plus to high trust). Under your current system they aren't home to instill high trust, when they are around they are too tired, and they have way less time/ability to engage in socializing activities with their children resulting in a non-parented, non-socialized society.
The majority of high trust societies are ones where peoples' basic needs are met. El Salvador has a very short history of some improvement from militarized policing but hardly enough data to start extrapolating from other than high enforcement police states are police states.
Not having moms working multiple zero hour jobs to try and barely survive would be a huge plus for high trust society. They would better socialize their children (which would reinforce a high trust society). They would better account for their children because they would be present (a plus to high trust). Under your current system they aren't home to instill high trust, when they are around they are too tired, and they have way less time/ability to engage in socializing activities with their children resulting in a non-parented, non-socialized society.
The majority of high trust societies are ones where peoples' basic needs are met. El Salvador has a very short history of some improvement from militarized policing but hardly enough data to start extrapolating from other than high enforcement police states are police states.