Nope! Those are still alive and well. As the country begins to push and pull over this issue, you best believe sites like Seattle Times, CNN, and The Telegraph need to pace themselves over how many misleading "pot will kill you (maybe)" studies they choose to report. In this case, they're saying that if you're a frequent toker, you might end up looking like Geena Davis' waiting room companion in Beetlejuice.
However, by doing that new crazy thing called "reading," we found out that the study in question was unable to find any definite causality of the changes in chronic pot-smokers' brains, as they tested them only once. For all we know, the real discovery here is that people with smaller brain parts are more likely to abuse drugs ... a theory that is totally backed up by a 2012 study that found that people with a similar brain condition at the age of 12 were more likely to end up getting high on funny plant farts.
This is your brain on drugs ... maybe ... probably not ... no.
So to say that the study even "suggests" that some wacky toke monster is shriveling brains is either outright scare-tactic bullshit or the result of these reporters skipping basic second-grade reading and comprehension skills.