No they weren't. Ebony and Ivory were named in order to help support racial harmony. They're also named after a song by Stevie Wonder and Paul McCartney.
For Dante, yeah. He's asking if they were going to change them for the reboot, which I do feel was a thing at one point. They just kept them the same in this to give some kind of resemblance to the old DMC games. --- [INSERT SIGNATURE HERE]