Such a non issue if he passed.
In this age, I don't know a single job worth a crap that still drug tests unless you get injured on the job or crash a company car. And that's only so they can deny you workman's comp or claim you on company insurance.
Yeah, weed makes some people ********, but I also know fully functional Stanford Masters grads, engineers, very well compensated attorneys that partake almost daily. If there was an anonymous poll in the tech industry, itd probably be really amusing to see the results. And most of those people, and all the people I went to school with that did it, aren't going out drinking and putting themselves in situations where something stupid can happen, unlike alcohol. They're inside watching Netflix and eating. So whatever, to each their own.
I just think its funny that you have a sport where violence is openly encouraged, players are taking their entourages out to strip clubs, but smoke a joint in the privacy of your own home and that's just over the line.