I have to disagree with y'all on this: it's a 120% hardware failure, not 100%.
I just sent my Pixel 8 to Google for repair because it showed me the green screen of death; pretty much identical to what your device displays at the end of that video, except it's green (I like the purple color better, though). It first occurred several months ago when I was browsing photos. It disappeared when I rebooted the device. It reappeared a few weeks ago, and flashing back to stock didn't fix it (didn't expect it to). Praying that it wasn't a hardware failure, I used DP Alt mode to upgrade to Android 16, and the green screen magically disappeared. Wow!!! It was fine for a couple of weeks, then a couple of days ago it reappeared. My Pixel 8 is eligible for a free screen replacement. Apparently it's a known issue. Hopefully Google won't complain that I dropped the device on stone a while ago (after the green screen first appeared, though).
Wishing y'all a fantastic day on this splendid time of year!