I know I may be the minority now, but it would be helpful to have the dagger not be specifically tied to the Wayfinder but again assist those who follow the dark side/sith ways it will lead to their desire. But there could be a play on words to help “connect the dots.” Even in the translation it says Sith … Way … Finder so she could subconsciously view the dagger as something she can help.

Heck, again the vision that could be used when she picks up the dagger at the destroyer can either show footage of the Wayfinder (literal or from teh book), Endor and DSII wreckage or something on those lines that it confirms to her it will lead her to what she wants.

I only mentioned this since it could help reason why Orchi has the dagger. He knows where Exegol is, he doesn’t need the blade. But using a more “vague” purpose (Not leading to Wayfinder specifically) the blade helped guided him to find Rey’s parents, his desire (Following orders/revenge for the pappy clone betrayer) So we get, at least a reason, why Orchi has it and why Rey needs it.