I can make that statement the same way that people in the cycling community can make a statement about most cyclists. I have been in the gun community for years.
With regards to the stories I posted, I have no sympathy for criminals. If you want to defend them, then go right ahead. No one has the right to beat another person up and rob them. If in the act of doing so, the perp loses their life, then too bad for them. They should have picked a less anti-social form of work.
What those stories do show is that not only is it possible to defend yourself with a gun when cycling, it has already been done. The situation that you imply is impossible is not impossible at all. In two of the stories, the cyclist was pulled off their bike and were being beaten. During the beating, they were both able to draw their guns and defend themselves.