Limited use because it only works on straight pasta. The majority of pasta is not straight (penne, rigatoni, fusilli, macaroni, etc..) and thus you still need to measure it properly in some way.

The best way to measure pasta like this is to throw it from the packet into a bowl and you can get a good estimate of how much you need.

it is integrated in the box of the straight pasta... how is it "limited use" other than being part of the box that goes in the trash when the straight pasta is gone?

I weigh any shape of pasta in a similar way, just without the box. (I.e., fistfuls)

It’s limited to the boxes that have it…