With regards to your second point: we don't know if the Prius will generally last for 15 years/200,000 miles. They haven't been around long enough. So I think being skeptical on that point is reasonable. Granted, the Lantern should have pointed out that lack of data rather than making an assumption.

The fact that I don't know how long the Prius will last, or whether it's as reliable on average as a modern Corolla (which is about as fuel-efficient as the 80s incarnation of the Camry, AFAIK), is kind of a deterrent to me buying one.