should "well picked" be hyphenated? Sans hyphen, your comment would
appear to be saying that Faldage's choice of that nit to pick upon was a wise one, eg "That particular nit
was well chosen", whereas [I believe] your actual© intent was to point out that a similar argument has
been made several times previously.

no... and there is a third option: the choice of that particular nit to pick upon (among the many picked upon) was an apt one; i.e., no other value judgment was intended or should be construed thereupon.