Appears that a lot of third party apps are just using an older api that forces this notification to show. a lot less nefarious than it originally appears.
Seems that iOS14 offers a specific new API to check if there's something on the clipboard without actually seeing it which is what all these apps are trying to do.
The API to check if the clipboard has contents has existed since iOS 10.
> Starting in iOS 10, the UIPasteboard class provides properties for directly checking whether specific data types are present on a pasteboard, described in Checking for Data Types on a Pasteboard. Use these properties, rather than attempting to read pasteboard data, to avoid causing the system to needlessly attempt to fetch data before it is needed or when the data might not be present.
Seems that iOS14 offers a specific new API to check if there's something on the clipboard without actually seeing it which is what all these apps are trying to do.