I’m sure you understand my position, Jay, (since I’ve repeated it often on these posts) but for any new readers I want to be clear that I reject any “biological saltation” that would claim to explain the Great Leap Forward or the sudden appearance of Theory of Mind. If real, the GLF must have be a fortuitous but rare confluence of ‘ordinary’ biology (a larynx capable of sounds needed for language) and perhaps an epigenetic change in brain ‘wiring’ that promoted EWM (enhanced working memory) and expression of sophisticated thoughts through language.
In respect to the recent efforts (see @AMWolfe; @T.j_Runyon) to render the term ‘behavioral modernity’ as unscientific in reference to humankind’s origins, I would suggest that depends on how one plans to use it. Paleo-anthropologists may prefer some statistical method of treating 'behavior variance’ as more reproducible and therefore more comparable between research teams. However in explaining how Christian Faith can be seen as compatible with evolutionary science, it is quite acceptable to use layman’s terms to emphasize humankind’s uniqueness as the theological foundation for the Biblical term "In God’s Image’.
Al Leo