It is so important for all of us to remember how complex our attachment relationships are.
We all have unique natures that set off unique dynamics with our caregivers.
Sibling gaslighting often comes from the false belief that you can know what your sibling experienced because you were in the same home.
But the reality is that each unique kid is treated differently in each unique family system.
So if you have a sibling who feels different about their childhood than you do about yours, that doesn't necessarily mean that they are ungrateful or wrong, or idealizing your parents....they just had a different childhood than you.