When a person focuses solely on one as if that one thing is the only thing that matters, and all related things are not as important as that one thing, then that person is called a "hobbyist."
For example, I have a friend that is a "car tire hobbyist"....His interest is only to make sure that the tires on his car are perfect in care and appearance. Nothing else matters to him except his car's tires. He never washes his car, and unfortunately his car looks filthy, but his car tires are spectacular because he is a "car tire hobbyist."
It appears that there are investors, especially investors of OTC penny stocks like AXXA, that are "financial audit hobbyists."
You get the picture.....