I suspect Dave already knows the answer. This could be a rhetorical question, expressing frustration and despair with the fact that people find these crude categories so attractive. Surely he cannot be hoping for some collective epiphany, in which people throw all such crude distinctions onto a Bonfire of the Categories?
Implicit in Dave's question is a distinction between "crude" categories and some other kind of categories, perhaps "refined". Perhaps crude categories are those we use without deliberation or reflection. So what would "refining" or "refinement" look like?
Many of the categories Dave is referring to are polythetic ones - dependent on an overlapping set of characteristic features rather than a single defining feature. Therefore one of the characteristic features of the refined use of such categories is to remind ourselves that a simple category label stands for a complex set of overlapping attributes, not all of which may be present in any given situation. Any conclusions we might try and draw from these categories should be regarded as unreliable until they have been verified by unpacking the category into the complex observations of which it provides a simple summary.
Next practice doesn't mean discarding labels and categories, but it should probably mean being a little more self-aware about what Maturana calls "languaging" - including one's use of labels and the conclusions one draws from them.
- Vincent Kenny, Life, the Multiverse and Everything: An introduction to the ideas of Humberto Maturana (1985)
- Ernst von Glasersfeld, Distinguishing the Observer: An Attempt at Interpreting Maturana