They certainly do have a quandry...

It might not seem like a big deal, but it would be better for Fedora to come up with a clear policy before they have a problem then wait till the problem blows up in their faces. I've been in situations where a particularly controversial topic came up for a vote in groups where there were significant numbers of inactive members that hadn't been participants in over 10 years show up to astroturf the vote. The resulting political fallout ripped the groups apart.

Other groups have blocked members inactive more than N years were barred from voting till they became contributing members once more or just dropped inactive members from the rolls.