Wow, there’s so much here I hardly no where to start!
First off, I don’t know where you got the idea that Catholics can take the entire book of Genesis as literal or metaphorical. Did you read that in a Church document, such as the Catechism or a papal encyclical? Did you hear this from someone, such as on the radio, from the pulpit, from a friend/teacher? I just have never heard this and find it questionable.
As for your comments about the tree of knowledge, your use of the phrase “magic fruit” (especially with the scare quotes) comes across as arrogant and mocking or those of us – myself included – who do take the passage literally. The use of this phrase with scare quotes seems to have as its purpose to get people to align with your belief or risk being called ignorant or childish or some other less-smart-than-you label. Just saying
Personally, I have always taken the tree and the fruit as literal. But unlike you, I never considered the fruit to be magic or some other silly term. The action of suddenly becoming aware of good and evil was not because the fruit itself granted this knowledge – it was the action of Adam and Eve’s sin that caused them to know evil. When they defied God, they chose evil and immediately knew it.
That’s my take on it, and if the Church says otherwise, then She is correct and I am wrong.
God bless you!
Gertie