I guess I still like through the lens cameras. You lose any indication of where your AF point will be at anything more distant than your current focus position. There's no way of knowing how the current position relates to the infinity position, so if you refocus from something close to something further away, there's no way to predict where the AF frame will jump. But that's me. Great street camera but why?
The OVF axis is different than the lens axis. This produces parallax, that is the field of view of the lens is slightly offset from that in the viewfinder. In the TLR's of old, with the viewfinder lens above the actual lens, the field of view in the view finder was above that projected onto the film. In a range finder set up the FOV onto the film/sensor is to your right and down from the viewfinder. Leica introduced parallax correction that is the frame lines moved to show you what the film frame was going to record. Since a range finder focuses completely through the viewfinder, there was no issue with focal point. With on sensor AF, they where you focal point is becomes important.
Hence Fuji as implemented in their parallax correction when you go to focus, the focus point is moved to reflect parallax and what is shown is the location the focal point seen by the sensor. You refocus to a different distance, it moves because the parallax changes.
Works find. It might some getting used to. After awhile, you develop a feel for the parallax and your brain compensates in the background.
The one reason many like used a Leica or other rangefinder for street is size and the ability to see outside the frame that is going to be used to take the picture. It helps in quick composition to see more than what the camera sees. That's why there are frame lines.
Some people prefer that, some don't. Myself I find myself somewhat constrained by a viewfinder that doesn't give me more than the picture frame.