I’ve been studying it, kind of casually on and off for a few years.
At first, I thought the impact site was a bit to the west of Lake Superior, the object coming in from the NW, on a NW-SE trajectory.
Hitting the ice sheet, miles thick, therefore leaving no “crater” in the surface rock.
But these guys make a very convincing argument for Saginaw. Add to that that it matches what we see here, which are fields of crushed and intermixed bones in Mexico.
Whether they got struck by debris is immaterial. The shockwave alone would have pulverized them.
I presume you're aware the Mexico bones are a tiny part of what's been found around the world dating to roughly the same time period, the end of the Pleistocene. Alaska and the islands north of Siberia for example hold enormous bone yards.