The shortcut created by MSI installer may be a GUID, not directly points to an executable.
You can have a look at the word or excel shortcut if they are on your desktop.
The magic behavior of MSI is that if it finds some dependency is missing. It will run the setup application again. That is so called “install on demand”.
But is it a useful feature? May be not for small shareware products, but may be true for large products like office.