That article comes of as an attack piece from someone who feels threatened (maybe someone with serious investment in traditional reactor tech?). He makes ridiculous claims about the US spending decades trying to get thorium reactors working (we did not), and about many companies trying to create thorium reactors in past decades (they did not), and makes scary claims about a small amount of thorium 233 and its potential to make bombs (far more refined plutonium and uranium exists and is more easily weaponized). The truth is, the US made only one test thorium reactor decades ago, and it proved the potential for a sustained thorium cycle. The current research challenge is only around extracting waste products from the molten salt fuel mixture, and that is well within our technical capabilities. The only thing stopping the development of working LFTR reactors is the will and funding to do it.
I would pick apart the article in more detail, but I suspect other people have already beat me to it.