I'd say it's even worse with video. My phone can make 4K videos, but watching them on a 4K TV is painful. They'd probably look better if you would downscale them to 1080p and then re-upscale them to 4K. They'll be a bit more blurry, yes, but they won't have this artificial flat look everywhere.
Memorizing high-frequency patterns and then reproducing them is one of the very few tasks that AI is actually good at. As such, one can use the raw HDR exposure data from a phone and the noisy raw image data from the sensor and produce naturally-looking high-res images from it. The way that it works is that the AI has memorized the small-scale details from millions of good photos taken with large lenses and proper equipment, and that way it can replace the noisy phone sensor data with its noise-free counterpart.
However, such an AI currently needs 10GB of GPU RAM and it runs for 2 seconds on my 1080 TI for a 4K image. So we'll need another 10x in mobile GPU performance before it becomes feasible to integrate such technology into camera apps. And then of course another 20x for live video processing.