Can any Google Pixel smartphones take 12MP or better photos in 16:9 aspect ratio?

I have been considering buying a Google Pixel 3 or 3 XL Android smartphone to use primarily for photography and phone calls. Google advertises that these phones have 12MP main cameras. That's fewer megapixels than I would like in a camera, but I was still considering those devices as possibilities. While performing research, I saw a short video clip that showed Google's UI. From what I could tell, 12MP is only available in 4:3 aspect ratio. In 16:9 aspect ratio, the resolution drops all the way down to a paltry 8MP. That's *much* less resolution that what I what in a camera. Is the resolution of the main camera in the Google Pixel 3 and 3XL only ~8MP in 16:9 mode? If so, is this limitation true for their entire line of Pixel smartphones?