Wordpress has a default, for the most-part, non-editable place holder page for your blog. How can I recreate a similar page to this for use with my plugin?

When accessing the page defined as blog page within wp you can edit basic info including the permalink but not the content. The content is blanked out with the warning "You are currently editing the page that shows your latest posts."

I can see the line in the posts table for the blog page but nothing out of the ordinary there. I am aware of the blog.php specific script but struggling to find dev info on replicating such a function

TIA