It's a good example of why you should use Linear for high-res graphics.
On the other hand, everyone should keep in mind that for low-res pixel art Point sampling is often the best bet. Linear does make for smoother scrolling, but it will also slightly blur your pixel art. If that's the look you're going for, then fine, but to keep your pixel art crisp, Point is the way to go.
Not to mention that at low resolutions, you won't notice the strange jumpiness when scrolling because everything is blocky anyway.
You know what... I just thought of something. The problem with separation between tiles in scrolling games that some people have... it may be due to the fact that the movement behaviors are operating on a sub-pixel level, but the Point rendering is operating on a whole pixel level. Could that be the problem?