That is not an uncommon guess, but the argument against it is that these took some sophistication to make. This isn't some disposable gewgaw. These were made with relatively tight tolerances and exhibited the best metalworking fabrication of the age. One theory I've seen seriously floated was that they were made as a demonstration of metal working competency, the equivalent of a benchy in 3D printing.
No, no you don't. Everything that isn't fully functional and necessary for life is a ritual object! And also some of the the other things to! It's all ritual! It's ritual all the way down, baby!