Well, a poor guy stealing electricity power supply jus to mine bitcoin and I think bitcoin that he mined is not worth to be in jail. That is really punishable by the law, still lucky that he only jailed at 3.5 years. This serves us a moral lesson, why we are stealing even though that is punishable by the law and that stealing electrical power supply is the criminal practice which is not good because time to time you have been caught by the law.
It should not matter if someone is poor or not if someone is smart enough to mine he is also smart enough to know that he should pay for the electricity he is using. If he could not cover the cost with the Bitcoin he did earn with mining he could better spend his time on another way to earn Bitcoin.