Gatsby's page-fetching is a feature I consider a double-edged sword (though I'll admit I also don't fully understand it 😅). On the one hand, I'm all for anything that decreases load time between pages on a site. On the other, pre-caching a bunch of content that the user may never need feels like an extremely wasteful practice. InstantPage takes a slightly different approach, instead triggering the page request when a link is hovered (or touched on mobile). In their estimation that can reduce latency by 100s of milliseconds, so we're not talking huge wins here, but a minor UX bump. Assuming the page weight added from the client-side JS doesn't offset it, of course...