No, the debate was never if Padme died full stop, the debate was whether Padme died IN EPISODE III. That quote from ROTJ made it UNLIKELY she did, due to the memory issue- and if Leia remembers her mother after brief exposure due to the Force, then Luke should have done too- yet did not.
So the debate pretty much came down to the idea that whilst we had no firm information on whether she died in the film or not it was more natural to assume she did not. Now we actually HAVE information, though, all the debate goes out of the window- if this is confirmed.