What do you mean "Opinions?" The article is clearly biased and cherry-picked a particularly ignorant/dishonest academic to interview.
Price is always debatable, of course, but anyone still calling bitcoin a "scam" can no longer be forgiven as simply uneducated. Bitcoin has been around long enough, and received enough exposure not only in the media, but also in academic circles and government hearings and regulatory bodies that it is no longer acceptable in educated society to retain the knee-jerk "it's a scam" reaction. At this point, that belies either a profound stupidity, or some disingenuous motivation.
tldr; that article is trash, and belongs in 2011.
Oh, when i said "Opinions?" i was asking for the communities opinions. But its funny, now that you mention it, it seems like this article was written in 2011, and they forgot to publish it until now, and they just added in the current price trend at the top lol.