Cannabis leads to shooting people - apparently

So, according to coroner Roger Atkinson The shooting of a man in Lincoln is proof that cannabis is not a harmless drug.

<q>I would want to stress... that cannabis is not a harmless drug and this case demonstrates how devastating its effects can be.</q>

Woah... back up there a second sparky.

So the guy was pissed, shot someone after an ongoing argument, but this demonstrates that cannabis is to blame?

<q>Mr Dickenson was later discovered by police lying on the kitchen floor in his home, where officers said it was clear he was drunk.</q>

<q>... a considerable level of alcohol... </q>

Why is the headline not "Alcohol 'led to shooting'"?

I need a rant category...