I agree with Herb…. but I’ll call it education.
On the big river it is not at all unusual to find larger crappies using deep sauger water when the flow under the ice is not excessive.
Its hard to convince people that those big crappies love the deep, currented areas associated with flats nearby. These can be favored spots when everything is at a constant. Toss in a cold front and you will likely have to look elsewhere until things moderate again.
Nice find!