Why? Your lack of substantive response demonstrates my "economy of force" quite sufficient to the task.
Didn't think one was necessary.
My response was deliberately dismissive of an irrelevant non sequitur.
However, since you insist upon one:
The point at which stubble becomes a beard is subjective. In my humble opinion, it takes place when the owner makes an effort at grooming it in some way...defining the edges, trimming the length; or as in the case of the Duck Dynasty guys, when no obvious intent at grooming is evidenced.