I won't say much about the article as it's a topic that has been discussed plenty of times before (The merits and faults of Bitcoin) with often inflammatory results, but I will definitively say it's pretty easy and rather intellectually dishonest to attack it only whenever there's a dramatic price swing. Where were all these articles during all those price lull periods?

Also, if we're pointing fingers, the influence Coinbase has on Bitcoin is insignificant compared to the Chinese mining conglomerates. The US is not the rest of the world.