If avoiding the ant-ageddon is your main goal, pick them and give them away. Free plums sign like others have said? Idk if I'd expect someone to pick them though, I'd pick them and bag them myself.
If it's like what do you DO with a million plums after they're picked, I'm plum out of ideas besides give them away. The jam and wine suggestions sounds interesting. Plum pudding mayhaps?
Yeah, I think that will settle with time. It's fresh on everyone's minds right now. As Lemmy continues it will become more of its own thing.