Title is a bit misleading. The company sent up the cubesat "debris" along with their net for testing purposes. I guess that does make it space debris. If their net had failed, it would have been yet another piece of junk orbiting - but the the net effect was zero cleanup. It was a successful test.
>>> The mission involves deploying these cubesats as artificial space junk and them capturing them to demonstrate the effectiveness debris removal technology.
It picked up trash that it released. It did not intercept trash. It grabbed a conveniently placed and engineered object with virtually identical orbital parameters.
