Not White Martians, but other Daxamites, maybe. After all, they were still part of Invasion, right? Or was that retconned after Infinite Crisis? If not, people in the DCU will remember that there's a whole other alien race with all the same powers, allied to the Durlans who had shapeshifting...
And of course, they also all remember that time everybody on Earth had superpowers to fight Mageddon. They just never mention it.