These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Can also be considered a Buddhist Western. El Topo's quest to be the best gunslinger has many parallels to the quest for personal enlightenment, and each one of the Masters has a philosophy that, while ultimately getting them killed at El Topo's hands, nevertheless causes him a Heroic BSOD after defeating them. He even kills himself by setting himself on fire while sitting in lotus position, an obvious parallel to Buddhist monks who have done the same.
Values Dissonance: The amount of animal cruelty is staggering. An entire scene features roughly a hundred bunnies, only for them to be shown dead and dying on screen within a minute (and several minutes later, set on fire.)