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.
YMMV: The Shahnameh
Squick: See the Obviously Evil example above about Zahhak, who had brain-eating snakes on his shoulders! His kind-hearted cooks trick him by mixing one victim's brain with a sheep's brain. Unfortunately, this still means that every day one innocent man gets his brain removed.
Periphery Demographic: The Shahnameh is understandably popular with the remaining Zoroastrians, as it preserves important information about Zoroastrian Persia, and Zoroastrian religious history.