It’s not school holidays in this part of the world yet.
It would be hard to screen it off on such a large site, and why bother wasting time and effort.
I hate to say it, but there will probably be small parts of plane where the crowd (and it would be a crowd) would stand, and they may need those small parts.
They don’t need to be covered in press photographers.
Why not let them tidy it up and investigate with some dignity. The press are already all over Facebook asking for exact details.
When people go to Duxford, they enjoy seeing some aircraft flying, there will be no flying till Friday.
My honest view, what a self entitled sort of post, someone has died, they can find out why with minimal inconvenience and intrusion this way.