Bare with me, I'm not saying that there's faulty optical engineering. I think it's probably a tradeoff in the amazing engineering that builds such a performing camera in such a small device.
And I'm not saying that it's not common with any other camera. I'm just saying that *in my experience* I've hardly ever seen such pronounced reflections as in many photos I got and saw with the iPhone 13, normal and pro.
Then again, I find the statistical hypothesis perfectly sound: the sensors and AI do better and better work at night, people shoot more at night, people get more reflections. Again, I've done quite a bit of night photography and the only times I got such apparent reflections was when I forgot a transparent filter on the lens.