I think it would depend on what the 'thing' is and the population in question that the thief is part of. On Ni and Lo Pop Low Tech worlds, they might not know what it is, or if they know, might not need it or know that it will soon be a paper weight or ugly yard art. Unless they know the 'things' value and have criminal connections that can make a profit of it on another planet... maybe. But that would require a high enough volume of theft on the Ni world to make it worthwhile.
On a Low Tech pop 7+, there might be a number of someones who repair off world 'things' and have access to parts for repair through an off world supply chain as there is a population big enough to have enough off world 'things' to need repair. I think those worlds would have a high tech theft problem.
Even thieves have to take supply and demand into consideration, and of course profit versus risk. Grab a hand comp or laser rifle and then have the owner go mercenary on them to get it back.
And then, when population isn't part of the equation, the TL theft could go both ways. A Low TL Item that might be in demand on a higher TL world for some reason, like scientists on a high tech world who want low tech slide rulers. Their world doesn't make them because they don't need them, but they're sooo coool. And only the cool scientist both own and use a slide rule! But due to some regulation or other reason, slide rulers are actually illegal on the high tech world, so they're smuggled from the low tech world, and owners of slide rules are looked down on by their peers...