First things first - the idea that Oval Office that Biden uses is fake, is wrong. Kill the concept with fire because MSM is using our grasping straws to make articles. The idea that we're generating traffic for them with dumb and easily debunkable theories is counter productive.
I also won't deny that the Castle Rock production / usage of a replica Oval Office was interesting and that I fell for it originally. The original idea gained traction when a German posted a replica of the OO. However, with the EOs beings posted - the inauguration being filmed by 3rd parties (it was still pathetic) and the changes in minor details (wallpaper, reflection of light, and 'diet coke' box) is easily changeable considering the office's importance.
There needs to be more investigation on what Castle Rock is instead of latching onto a straw and running with it. Originally I thought Castle Rock had to deal with a military base or chess maneuver but those quickly faded within days but seemed a lot more plausible than the fake setup.
Lord of the Flies
Scotland
These are my next 2 best guesses as where to start looking if Castle Rock isn't about a production company.
Castle Rock is the fictional town in Maine where Stephen King set several of his novels??
There are plenty of Castle Rock towns. One in Colorado and one in Oregon I believe.
True true.. just spitballing
fictional
This I think is KEY, FICTIONAL Like a movie