This change is a great change as so many Apps spy on your pasteboard. I think a lot of people are going to be shocked at how many apps peek into your pasteboard for both legitimate and illegitimate reasons.

It's sad that your app won't be as useable but I'd much rather have the universal pasteboard protections. It would be worthwhile if we had to specify a pasteboard access reason in the Info.plist, but that likely would require a new API because it would break all legacy uses of the current API.