Such explanations are not reassuring. The problem for me isn't whether LinkedIn is actually using the clipboard, it's the very fact that they have access to it and can do that in principle. Why do apps even have unrestricted access to the clipboard? Do we give apps unrestricted access to cookies? No.
Actually we do. Any app that uses the in process embedded web view on iOS has access to anything that you enter on the website including passwords and they have access to cookies. You might expect that from Chrome but what about your RSS news reader?
My preferred news reader Feedly uses the out of process embedded WebView so its a moot point.
