It's only a part of the issue. The other part is that a "launcher" app shows miniatures of apps when you scroll through open apps, and this behavior is controll

It's only a part of the issue. The other part is that a "launcher" app shows miniatures of apps when you scroll through open apps, and this behavior is controlled by the same screen capturing permission. When you enable screenshots, you also enable previews in the launcher app when switching between apps, in some cases it might be not desirable. There's probably some more nuances that I'm not aware of.