Consider this dialog box.
The application was modified.
It can't be updated.
Why not just replace it? Replacing a modified application seems to be a perfectly sensible use case.
But no, rather than doing something useful, it shows a dialog box. I guess no one thought through this use case and asked what -- if anything -- the Actor actually cares about. Doing installs is not one of my goals as an actor. Managing installations is not one of my goals. I want to (a) read PDF's and (b) have everything else handled automatically.