You are new, so I am not suprised to see you missing some of the points mentioned. Here are some rules to live by here...
1) Bobbing is cutting up a truck. Some like it, some don't, and everyone will give you their own opinion. Its your truck, you can do what you want with it.
2) Get a tough skin. Don't take things personally. And don't take my advice the wrong way, it may be harsh but true.
3) M52s are less common trucks. Some people may wish you cut up a common truck like an M35 or the 5-ton equivilent.
4) None of the razzing is personal, it is directed against all bobbers by those who don't like bobbing. You'll have that. I am neutral, because you have to do it right for me to like it, you know.