To add to this mix is the biology of the available fish wrt location.

BG do well north to south but have different specie profiles as noted by Bob. In general they live longer, grow slower and tend to stunt more the further north you go.

YP and eyes have limited range wrt location. Nether do well in the deep south including most of Texas in any waters . Eyes in general are not an optimum pond fish even up north. YP do better in ponds but not in southern LMB ponds because of temps and activity levels of LMB (YP can't withstand southern pond temps or serious year round LMB predation).

Ponds are different than big lakes wrt fish. In most ponds BG are the forage backbone. That is not the case in large lakes where , depending on location, YP , the Shad clan or both are the major forage. BG are included in that mix but do not dominate large lakes like they do ponds.

As a result YP and eyes are not an option in much of the country and not the best option in most ponds.

Add to that the fact that trout are an available option in NE and not so in the south except in a few limited circumstances.

I would say most of the differences in opinion are a result of available options which are limited by biology based on location. Another example of latitudinal limitation.

BTW Eric's comments are IIRC expressed policy of at least one maybe more NE states which have restrictions on stocking BG.