I hadn't seen anything about that projection.
I've seen quite a few different projections based on our activity. I dunno if anyone really knows for sure how many will die at this point. We're still not sure about the morbidity as far as I know.

But right now the US has 100k infected. Italy has had 80k cases and 10k deaths. That suggests possibly over 1% death when hospitals are overrun. Hopefully we can manage to deal with our cases a bit better than that due to the sheer size of the US, and keep infections low, because if we did have mass infections in the millions and over 1% morbidity...that would not be good.