I'm inclined to agree with you, however she wasn't that young when she was dropped off. Conceivably she had a home life of some kind she would be familiar with before she was taken to Jakku.
Obi would be proud
Nah what I'm TRYING to say is that she was a young girl, therefore she was probably not old enough to understand the context of what was happening around her, if there was indeed an elaborate plot to get her on the planet.
For example, and this is just one theory.. if her guardian (whoever that was, maybe a real parent, maybe not) told her that her family was taking her to another planet to live until they returned, as a young girl, she is not witty or intelligent enough to understand that kind of context and would probably believe literally whatever she was told.
You say "dropping her off", from what she know she has been there all her life, never in a spaceship, nor another planet. There is no mention of her "being dropped on Jakku"' instead everything she says point to her being there for as long as she can remember.
"Her parents", fine, her family. I assume she remembers her family because there is no reason to think she does not.
So: doesn't remember living anywhere else than on Jakku, and remembers her family and them leaving her behind.
What..? The flashback clearly shows her being dropped off by a spaceship. Didn't you see this in the film? She assumes those people or person is/are her family. Clearly she lived somewhere else before being kicked to the curb of Jakku.
Again, there are a variety of reasons why she may not remember stuff about being dropped off on Jakku. One theory is that her memories were somehow altered.
I personally think if she had clear memories of whoever dropped her off, Rey would have talked about them in TFA. It's incredibly awkward to go to TLJ and all the sudden she's just like by the way, I remember X Y and Z about my family!