Biased? Maybe, I don't know enough about the economics of the situation- what I'm glad to see is that this is a tool that gives some insight to the true costs of nuclear power- as it is a model, it is incomplete (like all models), but it gives a place to start, to improve, and most importantly, to compare to other models.
For our society to survive, we need energy- lots of it. And it's going to cost us in lots of ways. But if we are going to get capital investment, we have to convince the holders of that capital that their investment will have an acceptable return over their timeline. Acceptable means a lot of different things- to some "what will my retirement account look like when I want to retire?" To others, "how will it affect my stock price next quarter?" And so on... No matter what, every means of energy production has costs. What I hope is that a tool like this will be updated, improved, and applied to all the alternatives so we have a chance of making choices not based on fear of the unknown or the marketing campaign of someone who wants to sell a resource that they have a monopoly on.