What If the Occupant of Sgr A* Isn't a Supermassive Black Hole?

In the last couple of years, we have learned a lot about black holes. On April the 10th, 2019, we got our first official image of a black. And in 2020, two talented physicists received Nobel Prize for discovering that Sagittarius A* is a supermassive high-density object. Yes, we are speaking about Andrea Ghez and Reinhard Genzel. The term Sagittarius A* mentioned here is nothing but the name given to the center of our Milky Way galaxy. The only known explanation for the cause of such a massive object has been pinned down to black holes.