the edge case for this whole scenario seems so WTF. You gotta be on your PC
Thats like saying that connecting your PC to a display is an edge-case because you have to be on your PC to use the display. But yes, you have to be on your PC to make video calls from your PC; lots of people do this.
You gotta not want to use your built in webcam
Apple Studio, Mac Mini, MacBooks in clamshell mode, external displays without webcams, or lower quality webcams, like older macs, will benefit from this.
You gotta buy the dongle thing (and actually have it ready if you're on macbook)
Yes, you need to buy a bracket to hold the phone. Lots of people plug things into their MacBook, like a display, hub, etc., so why would placing a bracket on top off the screen be any different.
You need to have a mag safe case
You don't need a MagSafe case if your phone has MagSafe, but you can get MagSafe cases for older non-MagSafe phones. Or buy a non-magsafe bracket.
You need to be on a video phone call app
Similarly you need to be in a web browser to surf the web. CC works with video call apps or video call websites.
You can't use your phone whilst on the video call.
Personally, I can survive not answering a phone call while on a video call. Browsing and messages are already on my computer so its not like I am without a method of communication.
There just seems to be so many barriers that who would ever want to do this?
I don't see many actual barriers.
It's neat, that's for sure. Practical. No.
Remember when we loved Apple because they would develop neat features you might not use all the time, but now we nitpick them.