I've had my weed phase between 16 and 19 and I dont know. There is a sort of arrogance that comes with ignorance in general that subsides as you learn the vastness of what you'll never know.
I suppose the intersection of ignorance, criminality and drug consumption may make you think that because they smoke, they exhibit the other traits, but it could be the contrary.
You need a bit of arrogance to think cannabis is on your side and you can dominate it, as I witnessed myself when I started stumbling as a teenager.