Not that this is even remotely a new idea. I remember reading a science fiction short story several decades ago, where they powers-that-be committed to the idea that the best way to handle terrorists was to make them a laughing stock. They were all to be called "Charlie", and all the news organizations promised to treat them as nothing but incompetent fools.
Sadly, that doesn't appear to be enough info to find the name or author of the story, but it had to date back at least to the 80s, and more likely the 70s or even 60s.

I'd say that once someone as committed mass murder, we no longer need to be so politically correct. Terms like "psycho," "maniac" and "lunatic" are perfectly fine. I believe it would be helpful to draw a firmer line between the typically harmless mentally ill people who deserve sympathy and support and those who have crossed the line to become irredeemable violent psychopaths.

Oh, and Stormsinger, I think the name you're looking for is probably "Johnson."

As far as I understand the psychological reasoning behind this, it is the same as a well known effect in the area of suicides which in Germany we call Werther Effect after a novel be Wolfgang Goethe (published 1774), which caused a number of "copycat suicides".

It seems to me that a potential spree killer is desperately trying to be noticed by society either out of personal, religious or political reasons.

If you show such persons that they will get noticed, that they will get there 15 minutes of fame, it might push them a closer to the realization that committing mass murder is a way to be "noticed".

Also we can do something about this. For the last four mass shootings, i have not shared anything about them on social media and avoided clicking as much news stories i can. We are part of the information network and carry part of the responsibility. If you don't read their news, they won't profit from them.