The killcam ragdoll bug exists on all versions 1.6.323 to 1.6.640.Hardcore player here. Thoroughly tested 1170. Current setup has no crashing. But big deal, neither did my 1.5.97 setup.
Have to admit, I had to watch that video a few times to even figure out what the heck the bug even was. FINALLY saw it. Then ran into game and...... not present. Then again I probably have some mod fixing it. Good old Todd, always giving us a new thing to fix.
I swear its one on nastiest bugs since the release of Skyrim in 2011.
At some point of gaming it trigger (mostly in BleakFalls Barrow), then its like a plague that never live you spreading to other ragdoll like the body of soldiers in forts.
I did test 1.1170 last year for one hour and I wasn't able to reproduce it.
Maybe its one of the stealthy fixes that Bethesda did while recompiling the game with C++2019.
Bottom line: I lost trust in Bethesda since after each new release they succeed at generating a new engine bug.