Looking honestly at the photos, rather than projecting prejudices and attitudes on them, one can see that several of the cars are business-like, clean, orderly.
Like the cash, the handguns may have been placed (planted) rather than found. One appears to have come from a bubble wrapped package which may have been opened for the photograph. The small chrome automatic may however have legitimately been "found" in the car, perhaps under the seat. Few are stupid enough to leave a handgun where it can be easily seen .
The clean (but for paper towels) older car with the cane seems to be owned by an elderly person: the once "luxurious" fabric seats and the cane suggest that. Is the reviewer familiar with the reality of age? The hypos may suggest diabetes.
The writing is tortured. The reviewer is stretching. Struggling to seem sophisticated he misuses the term "allude."
If the clutter was actually found in the cars (rather than placed by the photographer) what we're seeing might be better understood with the archaeological term "middens" rather than with "art review" jargon.