You might have missed the point. I am referring to the WIDE camera, not the ULTRAWIDE one : the wide one has enlarged the ISO gamut from 2304 to 3072 (much mode sensitiveness in the darkness). See below specs and comparison to prior generation of wide angle
The results are mainly due to hw upgrade: please note night mode works by using new WIDE sensor, new processor, and software to gather as much information as possible from a dark scene.
How this will eventually work on a XR, has still to be proven. And I doubt it will be a success without a better hardware.
Probably it's me, but when I visit cities with my reflex I am mainly using a wide angle for my pics . I appreciate this feature a lot also on a phone that weights 20% of my reflex.
About poor connections, it's questionable - still need to check the upgrades from MY XR to MY 11 (yes, I have both

) and will let you know foir sure.