Right. Firefox and Safari (iOS and desktop) haven't implemented the Clipboard.read functionality yet either, only Chrome has and it's only available on use action such as a click or keydown (and not available on touch or scroll events).

But they can copy to your clipboard for you, a lot of services use "Click to copy" features. But reading is much harder.

iOS before 14.0 appears to have allowed apps to read clipboard contents without making that clear to users. Now that you get a notification whenever an app reads the clipboard, it has become fairly clear a lot of apps are reading clipboards constantly. For what… we all wonder.