Why is intellectually dishonest? Is your view that the 100% of gunshot suicides would have been successfully committed anyway through other mediums? Or they lives don't count because they don't value/want them?
100%? Of course not. The vast majority? I'm willing to bet, yes.
The reason I think it's intellectually dishonest has nothing to do with suicide itself. When someone behind a keyboard or behind a news desk talks about gun-related deaths or gun violence, the image is of armed robberies, execution-style murder, and more recently the crazy white kid with the assault rifle. If you live in certain parts of the US you might think of gang violence.
It does not evoke a mental image of the divorced alcoholic ending his life with a revolver, or the undiagnosed depressed college student with his dad's handgun. These are two thirds of gun-related deaths, and they're cheapened when pundits and members of Congress use them to try and score political points.