Seems pretty risky walking around carrying those around with you. Any reason why in the world he just didn't put them in a large cardboard box or at the very least take a taxi. The guy spend like what $10K on GPUs and can't afford a $25 taxi ride and instead takes the train with GPUs out in the open like that?
I can offer 2 cases: 1. Police works fine, no more criminality. 2. Anyone can allow himself to buy 10-15 RTX3070. 
In any case, this city is a nice place.