Interpreting a shape idea within the ruleset of Surface-Modelling is a skill and a potentially very creative process in its own right. The same applies when a cabinet maker constructs a niffty apparatus which makes it at all possible to machine-cut a tenon onto an odd shaped staircase railing.
But it’s both not what I can consider the form-finding process itself.
I think that’s where people differ most: Some consider 3D sketching crucial for their work and very much wish for ways to move rapidly – in pretty much the same fashion as one may quickly fill a lot of scrapbook pages with concept sketches. In the Zbrush case I posted one can pretty much say ‘shape first, geometric paradigm later’.
Others start their 3D modelling work later in the process, with a far more mature Design idea already in place and good justification to use precision tools. I would let poor Millennials alone here – sounds like old guys talk.