Not really I read it and it is the same old argument, saying that bitcoin does not have value at all, but maybe we are all imagining the huge amount of money invested by the miners to mine bitcoin and the technology behind bitcoin which solved several problems that until that point were not solved, the volatility comes from mainly two factors the uneven demand for bitcoin and its limited supply.
I agree, I scan just the first page and I hear the same reasons all over again. There's nothing new in the article that will stand out. I try to search the first page with the word "speculation", it turns out the author didn't used this term. If he did, then I will tip off my hats to him.
Unfortunately, he didn't understand that everything is really based on speculation, that how the prices moves, if there's some positive news the market will pick up and increase its prices. And supply and demand is the main reason why everything is volatile. No need to explain further as @South Park already did in a nutshell.