After a while, you will learn that there are human players out there who are accurate enough that if you do not use SOME element of surprise, however crude it becomes, to get closer to the enemy, you will die as a dretch in a 1 on 1 encounter. And even if you DO surprise that lone rifle, the best will STILL give you trouble 99% of the time. Also, flying off the walls? You make it sound like being in the air is a good thing. Wrong. While in the open air, you're much easier to hit or predict, and that goes for any weapon, tracehit or not. As a dretch under fire, jumps are best used to go short distances, like from the bottom of a wall to a more central area on the ground. However, one interesting long distance maneuver is to jump off the wall and at the same time flick your mouse in the direction away from the wall, and you can, for example in the halls of ATCS, get all the way to the other wall and also be at a higher elevation. It's not necessarily a dodging technique, but I've had a few times where it has come in handy. Strafe jumping with a twist.

Come back with a lot more experience and maybe you'll have posts that sound reasonable to those you're trying to set examples of. "Best marksman." You obviously haven't seen enough.
P.S. Physuedo? You butchered the word. Pseudo is the correct spelling.