This was also the purpose of the mysterious C button on the right Joy-Con.
In fact, Id go so far as to say the camera functions are pointless and ugly.
Firstly,you have to pay for an NSO subscription to even use GameChat, which is stupid.
Why would I do that?
Discord already exists and is free.
I also find the way GameChat functions to be more broadly useless.
It feels like a Zoom call.
It was and still is the perfect console for couch co-op.
The Switch 2s camera flies in the face of that a little bit.
Vaccine rates are dropping, after all.