Did you read that link at all, or did you just look at it briefly? The page explains that the focal plane rotation
always happens if you use this technique, and so I indeed advocate that you should not use it at all, unless you have no choice because the point you want to focus on falls outside the range of focus points. In that case I would suggest you use the
outer focus point for your initial focussing, so you have to recompose as little as possible.
So if you focus and recompose, you create a situation where the camera has focussed
behind the subject, period. Whether or not you clearly see this (and so the photo is ruined) depends on a few factors, like the DOF and the subject distance, but the fact remains that focussing is
not correct when you use this technique.
I agree that in many cases you may never notice it, because of the subject distance and/or because you used an adequate DOF to hide the effect of your back focussing. However, there is one thing you should remember as well. DOF is not about
absolute sharpness, it's about
acceptable sharpness. The only part of your photo that is
really sharp is the focal plane. If you make a large print of your photo, and people watch it from the normal distance, they see the DOF that you intended. But if they go closer to have a good look at some details, then the DOF becomes smaller. That means that what may look like a subject in focus when viewed from the standard viewing distance, may become slightly blurry when they get closer. That's because you used a technique that placed the focal plane
behind the subject. For an explanation of DOF see
Understanding Depth of Field in Photography