It seems like we have a disagreement on semantics. I value this conversation because I want to come to a mutual understanding.
Would saying “use is worth more than value” be a subjective value judgement itself?
I think the way Marx saw things is fundamentally flawed. All economics and human interaction is based on value judgements. Some things may seem to be “useful”, but they are only used in so far as they are valued by someone. To define something by its perceived usefulness is a value judgement in of itself.