No, the article does not ignore Thorium reactors. In fact the whole focus of this article is on thorium reactors. That is what ThorCon is building. It is in their name.
The reason why you never see me mention the word "Thorium" is because in my opinion it is a bunch of hyped up nonsense.
There really is no such thing as a "Thorium reactor." You got different types of reactors which can use Thorium as fuel. Most of the time when people talk about Thorium reactors today, what they actually mean are Molten Salt Reactors (MSR) as I discuss here.
The important thing for safety and in dealing with nuclear waste is Molten Salt Reactors, not the fact that they can run on Thorium.
In fact I find it far more attractive that you can run MSRs on nuclear waste as that allows us to get rid of a lot of our current waste.
Thorium is more like marketing gimmick. It is easy to make a sales pitch around Thorium because it is cheap, we have a lot of it, it cannot be used directly in bombs etc.
However, once you did into the details there isn't really that strong a case for Thorium. It is not without reason that the industry has kind of ignored it. Thorium is useful for a Utopian future where we run nuclear power for hundreds of years.
But that is hardy our first priority. The first priority should be to get Molten Salt Reactors up and running. Once regulatory frameworks, supply chains etc are in place we may be able to use Thorium. Until then nuclear waste is the better option.