No.
If you go into the NameMapping element of your project, you should see three panels.
On the right, is the large main panel showing the details of whatever object you have selected.
Beside it, to the left, are two smaller panels. One is "Mapped Objects", the other "Aliases. Drag mapped objects here".
The "Mapped Objects" parts is the full object map. It NEEDS to be complete and contain all the elements required to locate objects within your application.
The "Alias" part however, is up to you. By default, I think it mirrors any mapped objects into the Alias map at the same time. You don't need this. You can delete elemets from the Alias map (container panels and so on) and just leave the key components. You can also rename them on the object tree or in the detail panel for them.
Be ceareful if you delete objects from the Alias map as it will ask if you also want to delete them from the object map. Make sure you don't accidentally delete hapf your application and end up re-mapping it all!
It's worth getting your head round and using it well as it makes understanding mapped object references in your code much easier. Ditto maintaining your object map. If the Alias map is clear and simple, and something breaks due to a change, sort the object map and, if you've done it well, the Aliases (and thus all your tests that use them) will sort themselves.