The question is not whether composition matters or not. Most photographers know and will agree that it is one of, if not, the most important aspect of photography.
The only difference is some does it better than others. Some can only try and copy what others can create.
Think Taurean is bringing up the point that some people just whack without considering composition or composition is not an important element in their photography.
Some of us think (or claim we think and/or know) it is important, but I think if you look around, there are so many snappy photos. When someone offers critique or honest comments, they are being ignored.