> Weights aren't IP so the licenses are bunk.

This is not yet a given, I expect rule-making or copyright law expansion if courts rule otherwise.

Things also change. In the 80s lawyers carefully suggested white pages phone listings came under copyright but "sweat of the brow" was rejected by US supreme court in Feist Publications, Inc. v. Rural Telephone Service Co., 499 U.S. 340 (1991)