This is an important discussion and I hope it continues.
Taxonomy is still awash with amateurs.
By amateurs I mean those who have great enthusiasm for the subject, but who haven't spent years in the library pouring over the past masters and learning the different schools of thought and the theory behind them. Ask an amateur or hobbyist what his or her species concept is, when it was first articulated and by whom, and how it differs from several other species concepts. You will likely get a blank stare or some vacuous comment that species concepts are irrelevant. Yet that same amateur might tomorrow go out publish a new species in some poorly reviewed journal of low scientific standards. My experience suggests that most amateurs have little or no concept of widespread infraspecific variation, or that such variation is an expected consequence of evolutionary processes acting on local populations.