No you don’t have to. When you share it, it creates a message with a link and brings up a share sheet controlled by iOS. You can then send the message block w

No you don’t have to. When you share it, it creates a message with a link and brings up a share sheet controlled by iOS. You can then send the message block with the link either via email, text, or any other relevant third party app that registers a share extension. It is all done outside of the apps process. iOS sends the message on the apps behalf to the other app. There is no option to share your contact with the app.