I do not support Israel. Never have. But not for ideological reasons.
Your arguments are largely academic. I am certain, for you, the ovens/furnaces were designed for Central Heating to keep Camp Occupants warm during Winters and Summers. And for practical disposal of the many unintended accidents and deaths from the hard-working, well-fed enthusiastic, voluntary workers, of Jewish, Russian, Jewish-Russian, Polish, Polish Jews, Polish Catholics and all the Germans in the camps who had subtle differences with Nazi Thugs.
Thanks, but no thanks.