In ArcMap, I can copy objects and paste in PowerPoint. For example, a legend or all map if I want! but in ArcPro I can't. When you need to do a presentation quickly it's easy to use some objects from different layouts or if you need to send an email for the review of the legend it's really useful. But know I have to use a spinning tool and it's only a picture. When I use copy form ArcMap I can paste and convert to a Microsoft Office drawing and ungroup, in my opinion, it's a powerful tool, for example, some times I need to send a map to the designer and this is the easy way.
