I don't ignore the rest of the world. Do you... feel ignored, Jobo? I mean, we might ignore the UK, because honestly, you guys are as bad as we are.
Seriously, though, any reasonable person knows that hard number predictions are based on models that are constantly being updated. As testing improves, we get more data, and people take actions (or in the USA in some cases, refuse to take actions) to mitigate the risks, rates will rise or fall and numbers will be adjusted.
So, all that to say, you may have heard someone project 40million deaths. I've never heard that number, but I wouldn't be surprised. I think it's possible that the experts were correct at that time, based on the model they used at that time (projected rates of exposure, positive cases, and resulting deaths at some rate), and also that these same experts will be constantly adjusting those numbers based on updated data.