My 2¢ (take at face value, not as an Official FPL Position)…
Since this is a blog / publication rather than a knowledge base, I think it’s better to publish whole new updated articles rather than editing old ones (beyond the odd fix here and there like this one).
It might be nice to have an “Outdated” template we could put up for people. It could be made to either point to a newer article, or when that’s not available point to the magazine submission process with a hint that an updated article would be welcome.
Some topics which are worth keeping always up to date might find a better permanent home at Fedora Quick Docs, so that might be an option for old-but-still-valuable articles as well: make an updated doc and put a note at the top of the old article pointing to it.