The article very graciously closes with the observation that the whole point is, the Plagues were acts of God to make the Exodus possible. Basically, this won’t satisfy anyone. :’)
All they’d need to do, is examine the floor of the Red sea, for a trail of human objects and marks on it. Then, they’d need to check if such features exist elsewhere on the planet, under the seas.
I read or heard somewhere that the plagues corresponded to different gods that the Egyptians worshiped. That God basically used the 10 plagues to demonstrate that He was God over all the things that the Egyptians were attributing to other gods in addition to freeing Israel.