Google’s software algorithms play a significant role in enhancing image quality. Even with the mid-range Snapdragon 670 processor, the Pixel 3a XL manages to process images and videos beautifully. Plus, you get the same intuitive camera app found on its pricier siblings.
Video shot using Pixel 3a XL (handheld) with post video stabilisation. Other than the flickering lights which is inherent of Pixel design (even Pixel 9 has that issue) due to 30 fps recording in Asia region, the video quality is good.
Watch this video below recorded from the Pixel 3a XL smartphone (released in May 2019). It was taken handheld (no gimbal).
So, don’t throw away your old Pixel if it is still functional. It may not work with VoLTE voice calls in many countries (since 3G is shutting down), it can still be used on WIFI for watching your youtube. It can be used as a compact outdoor camera for taking scenic shots or videos.