CoordinateFrame is marked as deprecated but still used in some pages. These pages should change CoordinateFrame to CFrame.
Link to page marking it as deprecated:
https://developer.roblox.com/api-reference/property/Camera/CoordinateFrame
Pages which use CoordinateFrame:
https://developer.roblox.com/articles/Camera-manipulation
https://developer.roblox.com/articles/Top-Down-Action-Camera
https://developer.roblox.com/resources/education/arcade/topDownCamera
https://developer.roblox.com/articles/Three-Quarters-Camera-View