I am not condoning racism but I think the point is more about two things: laws of the land and economics.
It is certainly harder to attempt to prosecute someone who pulls this kind of shit in Estonia than it is in the United States for example. That isn't prejudice that is a fact. Just as it is harder to go after someone for software piracy in certain countries.
The second point is that, yes, stealing X amount of BTC is certainly going to be more of a temptation to someone in a lower income area than someone in a higher income area. Why people are saying that isn't true is beyond me. That seems like basic logic to me. Most "thieves" are not rich (excluding whatever they have made from stealing of course.)
your first point counters your second point.
it is the lack of law enforcement and or punishment that make it easier for people to steal shit and commit crimes. not the poverty.
there is very little law enforcement going on around crypto in general that is why crooks from all walks of life are stealing from newbies on daily basis.
Was Mark Karpeles a poor man living in a poor country? how about Ross Ulbricht, Trendon Shavers or Charlie Shrem?
most people who work for big banks and corporations know that if they do anything wrong at work their organisation will pay a fine so they aren't too worried about the law
even governments act with the same mentality.
so no there is no cause and effect correlation between poverty and crime in general.. the idea that "most people who commit crimes are poor" has more to do with the fact that most people "are" poor. If everyone was rich I'm sure you would have similar crime rates and if you look at the crime statistics for rich countries vs poor countries I think you will find that borne out in the numbers.