As someone who’s drank alcohol and smoked cannabis, yeah alcohol is absolutely more dangerous/obstructive to normal function but no one bats an eye if you go home after work and have a couple beers.
Hell when I was in the military it was practically expected that you were going to show up to work hungover since there wasn’t fuck all to do.
Smoke a joint on leave? Kicked out, you’re the worst soldier/sailor/marine/airman that’s ever existed.
It’s an absolute joke that alcohol is considered safe enough to be legal but cannabis isn’t. Of the two, alcohol should be the illegal one.