The past doesnt always pave the present.
Like every bad thing that you've done wont effect you in the future. pot head of not, those who are sucessful are because they worked for it.
No one said they were bad for smoking pot.
The article basically showed how successful one can be even if they've smoked pot.
IE. The US President, the guy who won the most gold medals in the Olympics, one badass movie director, the governor of California, etc...