If you make modifications, and deploy them in a way accessible to a given user, the changes must be made available to that user. I fail to see what is unrealis

If you make modifications, and deploy them in a way accessible to a given user, the changes must be made available to that user. I fail to see what is unrealistic about that, or indeed user-unfriendly, unless you consider the user to be the developer and not the person on the other end of the wire.