Neither simplistic nor overtly ideological, as stereotypes might lead one to fear from an NPR station.
At least for me, it was more about the congenital stupidity of early teen boys than about guns.
People are complaining about police killing citizens, and it is a valid complaint, but on the other hand the police have a valid worry that every two bit criminal they stop for a minor misdemeanor can be armed. Even if it is a child.
The gun rights advocate solution to this is simple -- buy more guns. In the confused mind of a gun rights advocate if you have a gun in your pocket, you will be totally protected when some maniac pulls a gun and shoots you in the chest. Alas, the laws of physics do not work that way.
The juveniles in this story should also face consequences for stealing and possessing and likely selling firearms (beyond being expelled from school). Again, without consequences, the law is toothless and ineffective and things won't change.