By this logic, money theft is 'not a crime' if poor.
Being poor shouldn't mean you can't get basic life-sustaining things like food, shelter, clothing. That's why being poor is not an excuse for stealing but being hungry is.
Ironically, this is going to hurt the working poor the most who work at low margin restaurants, retail shops, etc as people just grab whatever they want because there is no more law protecting them. It also seems like a good way to get into beatings or even knife fights as small business owners and workers get fed up with thieves and now have an apathetic police that won't protect them. Those in high volume areas like food stands at train stations will feel the brunt of this, meanwhile I suppose the kinds of restaurants an Italian judge dines at won't even notice. If Italy wants to expand its welfare state benefits, then it should do that through its legislature via taxation, not via judiciary decree attacking its poorest workers. If the Italian poor can't find these socialized benefits then someone needs to ask by the welfare state is so inefficient and find a way to fix that.
More than likely the unintended consequences will be chasing out 'poor looking' people from various shops as retailers fear legal theft. Now the poorest won't be able to buy things they need and they won't have the resources to fight this discrimination via a lawsuit. On top of that, there's no Hollywood style theft where you just steal bread cooling itself on the window sill. It will involve breaking and entering, fights with the shop owner, collateral damage (a child trampled during a chase), tempers leading to weapons use, incentivizing snatching expensive food to be sold on the black market, and other issues.
Its obvious no one thought this through. What if a hungry person decided to smash up a €5,000 vending machine to get a sandwich or a coffee? Does the Italian government pay for the repairs? I imagine it won't. This is a bad ruling for Italian small business.