28 years is a long time, and the zombies can die of starvation. If it’s still post apocalyptic that’d be really far-fetched. That’s more than enough time for things to go back to normal.
(Taking off nerd glasses now)
Any story set after an apocalypse is post-apocalyptic. Back to normal is pretty optimistic even for 28 years. Maybe the whole premise is shifted from “zombies” to “long-term consequences of a relatively short period of zombies”? It’s an interesting angle that doesn’t get a lot of attention. What does happen when the zombies finally die off? How does that affect society decades down the road?
They’re 5 years early tho?
They were nearly 5 years late for “28 weeks later” so it’s probably an apology for that.
We were robbed of “28 months later”
They actually made a worldwide LARP that went wrong that started in 2019 and went on for years. Most people were angry about it.