I actually think Jar Jar is playing a great devil’s advocate role for this idea, because it does require a bit of work to figure this shit out.

That’s actually why I think having a more extended vision montage, in the vein of Dom’s edit of Kylo touching Vader’s helmet, would be beneficial to the moment she touches the blade. Rey blinks right as she says, “No”, in that shot where she holds the dagger. You could potentially slow her blink down, as if she were closing her eyes to focus, then go into the vision sequence. Get a few shots displaying Rey’s “darkness”, and she’s rewarded with a glimpse of the Death Star. Then Kylo interrupts her.

I think something like that could potentially show more intent regarding what Rey did to obtain that knowledge. So the audience isn’t left wondering, “If Rey just kept holding it in the cave, would it have eventually shown her the location of the Wayfinder?”