@J-Porter
That is not correct. Firstly, it is possible to see all the Civil 3D objects in AutoCAD as they would appear in Civil 3D, without object enablers. Just because you can see an alignment or surface correctly, does not mean Object Enablers are working. Secondly, whether you see bounding boxes vs or the "ACAD_PROXY_ENTITY" objects depends on how the file was saved in Civil 3D (see PROXYGRAPHCIS variable), and what button you click in AutoCAD when you open the file (see PROXYSHOW variable).
@ihtornWRV8J
Based on that image, no, Object Enablers are not working. If you see "ACAD_PROXY_ENTITY", it is not working. For instance, if I'm looking at surface in AutoCAD with Object Enablers functioning, I see this:

Check that you have the right year object enabler installed. If you're using AutoCAD 2022, you need to have the C3D 2022 Object Enabler installed. If it's installed, you'll see it an "Civil 3D 20xx Object Enabler" folder saved in C:\Program Files\Autodesk. Example:

If you need help installing, see this article.
Hope this helps.