Yes, it CAN matter, although in more specialized situations tan with a more normal focal length.
Image stabilization is useful at EVERY focal length, in the right circumstances.
At 200mm, you're going to want it for almost everything other than shots of erratically moving subjects. For still subjects, it will get you from blurry shots at 1/400th of a second occasionally to almost never having blurry shots at 1/60th. Which is huge.
At 15mm, however, image stabilization still offers about the same increase in stability, it's just that the difference is shifted way down. Instead of 1/400th vs. 1/60th it becomes more like 1/20th versus 1/3rd of a second
Therefore, it is more specialized, because rarely do we really have a desire to shoot 1/3rd of a second handheld. But if you're doing a fisheye of a waterfall, for instance, that image stabilization can be quite handy, as it can allow you to get some pretty significant blur on the water without a tripod while still keeping rocks acceptable sharp at 15mm. Whether or not you're willing to PAY more for it, though, depends on how often you're going to be in situations like that.
Good camera holding technique usually suffices instead of IS/VR/OS etc until lens focal length goes beyound 200 mm.
This is a completely arbitrary cutoff and statement that makes assumptions about shutter speed that are not necessarily true for a given person's shooting style.
Good holding technique should always be practiced, IS or not. They are not mutually exclusive. In fact, they
complement one another and add together in their effects.
As you go lower in focal length, IS still improves your possible shutter speed by about 2-3 stops. It's simply that this difference occurs lower and lower on the scale.
So yeah sure, if you refuse to ever shoot handheld at lower than 1/200th of a second for some reason, then IS will be useless to you below 200mm. If, however, you define your creative boundaries by what is actually physically possible, rather than by arbitrary limits, then this technology will open doors for you on any lens.
It's just that the benefits tend to get more esoteric the wider you go.