I'm not sure this solves the hard part of the problem. I was assuming there would be an actual robot arm involved. This is obviously not a difficult CV problem

I'm not sure this solves the hard part of the problem. I was assuming there would be an actual robot arm involved. This is obviously not a difficult CV problem. I don't want to disparage the post too much, though - the Roboflow tools to make this process accessible for a non-expert look very good, and it's a cool demo of those which is the real point of the blog.