Francis Scott Key Bridge collapse in Baltimore...

I don't understand this at all. Maybe if they were working under the bridge or over the side of the bridge a skiff would be beneficial. But they were repairing pot holes on the road surface. I think they are just looking to blame someone for something and this was just a terrible accident.
Yeah, the autopsy is gonna tell the story imo. If they died from blunt force trauma from the bridge collapse, boats in the water makes zero difference. If they drowned, then that's a different thing, although it's quite possible that the bridge could have pulled them underwater.

In the end, it may have been that there would not have been enough time to call them to get them off the bridge in time.