I'm sure the label seems incoherent to you. It must be frustrating seeing others discuss things that you can't make sense of.

The insight I offer, is that for many, a term may be both vague and lack a rigorous scientific definition, while still being meaningful and useful. This is a foundational concept and if you manage to internalize it I suspect that "ultra-processed" will be only one among many things that will begin to appear coherent to you.