Yes I agree his opinions were “flawed”, but perhaps only because it was created in completely different context
Worth is not subjective according to free market disciples, everything is priced, every interaction is pegged a number
Use is not a choice imho, just like you can’t choose to communicate with me in any other way but by moving your thumbs right this moment
Value is the choice
Which is why marx was flawed by trying to combine the two concepts, they should be separated