Why do you need a count for that? Couldn’t they just generate a UUID every time the clipboard changes?

Allowing an app to access the pasteboard without the user explicitly pasting into the app is weird to me. Maybe the thing I have in the pasteboard is not for this app but left over from use in another app. Since there's no easy way to clear the pasteboard, this will happen often. Maybe it's because I'm not an app dev that this doesn't make sense to me????

Would you elaborate on both points?

Any way to reset it as an end user? (Not enough awareness of the issue for search engines to find much.)

I think something like a per boot delta added to a (per app?) random base would preserve such functionality.