Rey palpatine wouldn’t be so jarring if her parents truly sold her from drinking money, were bad parents or palpatine didn’t care about her, the parents being so lovely and leaving her just to protect her , feels too much like a retcon from TLJ (her being from an special linage is already a retcon).

“You have no place in this story, you are nothing” was made with the intention, to point out that her actions were what made her special and crucial the story, not her linage or relation with someone important, she being a “evil princess” is not only a bad copy of the OT with luke and vader (Rey doesn’t even know and care about palpatine in the previous 2 movies), it negates her character arc and agency.

The optimal way to fix TROS but still mantaining “canon” is to make or imply that Rey is related to palpatine in some way, but with neither her parents or palpatine caring about it, nothing of “take my throne!” or “she is special!” crap.