I disagree. If you can't see the target well enough to be able to see the same point to aim out repeatedly, you can't be but so accurate. When shooting 450-500 yards with a 3-9, I have trouble even seeing the 1" bright orange bullseye on the targets I use. So, I have to aim at the center of the paper. Obviously I could shoot a tighter group if I could see the bullseye well enough to aim at the exact same spot.

That said, for hunting purposes or shooting steel plates where you have a fairly large area to hit and aren't trying for groups, you can get by with less magnification.

That said, in general I agree with you guys that practice is a lot more important than magnification. If you don't have the proper fundamentals down, having more magnification isn't going to help things, and will probably make it worse.