Earlier quoted context omitted.
I don't see the problem as long as it's directed toward a prosocial aim.
So busting people who are shoplifting items that they either need to survive or items that they can sell to survive to say, pay rent, because our capitalist system has shit on them and left them with no options That prosocial goal?
Now consider what happens when convenience stores stop being convenient. People with money stop patronizing them. They reduce their stock of items. They close. And now people, including poor people, no longer have a convenient place to shop.
Everybody has options. Shoplifting is very rarely, if ever, the best option available to someone on the ropes. It's just often the more convenient option, until it stops being convenient for them and everybody else.