That they are considered, but some, rivalries, doesn't make them so. UGA-Auburn has deep history, UGA-Florida does not, but the latter is more important today.
Tenn-Bama is the reason they play every year, and it's no a rivalry today but once was. Rivalries change over time of course, and these could go away with some lamentation by old guys. When I was a kid, UGA's biggest rival was Tech, end of story, and now I'd be happy not to play them again at all.
Better to play a decent team like Eastern Michigan.