Again, these are all just red herrings to ignore the 1000 lb gorilla in the room.
It's really hard for me to get worked up about this shit, sad as it is, because this playbook is as old as watching the Detroit Lions F it up on Sundays. We'll sit here and argue for a couple of weeks, the anti-gun regulation folks will talk about their concern about mental health and video games (which will be backed up with zero policy action or money because it's all nebulous talk to run out the clock on the debate) and then, once the debate subsides, we'll wait for the next one, where the cycle begins anew.
It's been going since at least Columbine, and I see no reason why it won't continue.