That whole link just describes why I loathe a good chunk of those roadie clowns....
I am with you. I could care less what I 'look like' when riding. If on the road, all I care about is that I am as visible as possible. In the dirt, I want to be comfortable.
For dirt, maybe the rules from the end would read more like this:
* pointing out potholes and other objects in the trail for the person behind is polite, so that they can jump or plink off them too- don’t ever bunnyhop potholes without forewarning those behind you so that they can line up to also hit them– Hogging trail obstacles is just rude- (I was guilty of that behavior)
* indicate with your hand to people behind when the group ahead is slowing so that they can jokingly check you or grab your shirt and pull you off balance as they go past you.
* If you do not make abrupt and unannounced speed or direction changes you will hit a tree almost immediately.
* never overlap wheels unless you first bang your front wheel into the rear wheel of the rider ahead a few times, making that cool knobby on knobby sound, so they know you are right there.
* if you get a flat in the middle of the pack, don't get mad at the guy behind you for laughing when you dump in the next turn. Rather than blowing by you, count on that rider to help you change the flat, while still laughing of course.
* when standing out of the saddle, be careful not to hit your head on low branches.
* if you are in a fast group and don’t have the energy to pull the other riders, stay at the back out of the rotation. Don't worry, someone will drop back to 'sweep' to make sure you don't lose the group. Mountain biking is about the ride, and riding in a group is about the group enjoying the ride- nobody gets left behind. The point is to get out & ride & have fun, together!
*If you want to turn a fun hobby into an anal retentive pursuit of perfection, ride the road with a group that shaves their legs, only drinks water from a bottle, and wants you to wave so they don't have to slow down if you get a flat!!