Kind of.
The big thing that actually defines FSR2 is that it has access to a bunch more data, particularly the depth buffer, motion vectors, and also, as you said, uses data from previous frames.
The camera jiggle is mostly just to avoid shimmering when the camera is stationary.
Yup. I get why some people might not care, but I don’t understand the people trying to defend this.
Would these people defend drinking a Verification Can™ as well? After all, it only takes a few seconds.