No idea, I think they say 360p to protect themselves from possible poor network performance and upsell people to 5Gb maybe. You need to select 720p but it does work.
Why get a Pixel when you can get a OnePlus which gets like 5 years instead of 3 years of software support?
Also mid range chipset for $599/699 and punch hole camera? Rather get a OnePlus 7T, 7 Pro or 7T Pro for less.