Plus you just can't reliably kill people with gas. The US gave up executing prisoners using sealed hyperbaric gas chambers because it was so unreliable. The "gas chambers" were just concrete rooms with normal wooden doors and NO zyclon staining.

"Gas chambers" start to make sense once you hear the same "survivors" claiming they had human soap and skin lamps, death masturbation machines, etc.

The entire thing is just absurd. The Germans didn't have time to do that stuff while fighting a war on two fronts, and if they did they would have done it more efficiently.

Instead you learn that in instance after instance, Russians committed atrocities against Germans and blamed Germans for doing those exact things.