Is anyone claiming that Marijuana legalization caused the decrease in traffic accidents? From what I understand the anti-marijuana people were claiming traffic

Is anyone claiming that Marijuana legalization caused the decrease in traffic accidents? From what I understand the anti-marijuana people were claiming traffic fatalities would rise, and this proves them wrong. It's funny that the anti-marijuana people are screaming "correlation doesn't imply causation", but you know for sure they would be blaming marijuana as the cause had fatalities increased.