lightspeed skipping would have worked just fine from a storytelling perspective if there’d been a few seconds of setup as to what it was before he did it, especially since Rey and Poe get in a fight over his even trying it. So obviously it was a “known” thing to those characters - we just needed to have it hinted it was even a thing before he pulled it off. It wouldn’t have taken a lot, and it wouldn’t need to be tied into the plot any more than it already is (which is not at all).
But I do agree with Dom that I thought it was pretty cool. But I’m a sucker for that bucket of bolts doing things it has no reason to be doing. You show me the space equivalent of a hot-rod Datsun doing sweet jumps, I’m going to react positively, if only for a few seconds.