Zetta_x, I was one of the people watching the topic like a hawk when gamesquest1 was doing his in-depth testing. I saw when he was able to replicate the brick, 3 out of 5 attempts. He was the one who pinned it down specifically to running diagnostics mode, and proved it.
Now, not being a coder or programmer, lines of code and digits don't mean anything to me. What means something to me is results, and he got them.
There can be no question that the bricking bug exists in B2, and ONLY in B2 and its clone derivatives. There can be no question that running diagnostics mode exponentially increases one's risk of bricking.
Beyond this, I did my own extensive testing with both my old regular 3DS and my new 3DS XL. I have never once run diagnostics mode, and with my regular 3DS, running only 2.0b2 the entire time, I booted into Gateway Mode approximately 400 times. No bricks. I've booted into Gateway Mode probably a hundred times with my new 3DS XL (on 2.0b2 the entire time) before updating to OMEGA, and no bricks.
This evidence is first-hand, and it is compelling.