They could do it somehow. Ohio Stadium is in a low spot and it is drained by a system underneath. My understanding was a very high water table plus the Olentangy river running right beside it resulted in flooding.
The players, really ex players, who were talking about it were specifically asking for a standardized, uniform, surface in all 32 stadiums. And they wanted grass. I don’t know how you could do that in ford field. Minnesota is indoors as are some others. Too late to put in the giant tray ala Arizona and, I think, Vegas.