Slimboyfat, I agree that the statement you highlighted was probably exaggerated. I don't recall anything official that declared that "hundreds of millions" of lives would be taken by COVID in early prediction models. But let's not get hasty and dismiss this out of hand before considering this:
Early models DID predict 2.2 million in the U.S. alone. They also thought Great Britain would lose half a million. Here is one example of such a report. You can easily google search to find this 2.2 million in the U.S. COVID death prediction all over the internet:
https://www.cato.org/blog/how-one-model-simulated-22-million-us-deaths-covid-19
The thing is, some people took these figures and decided to extrapolate for a worldwide prediction: if the U.S. is 328 million and the world is 7.6 billion, then given the same ratio dying of COVID as the U.S. that would mean 50 million deaths due to COVID worldwide.
The thinking continued that this 50 million would be a MINIMUM, because most of the 7.6 billion would be in third world countries and would probably die at even higher rates than the U.S. 100 million deaths would not be out of the question.
I'm not saying I agree with any of that, it is just the thinking that people had based on actual prediction models.
Of course, we know now that third world country numbers are WAY better than first world countries. See the post I shared earlier about COVID deaths so far, by country. Why is that so? Well, see my previous rants on the completely illogical and dishonest way COVID deaths are counted in the first place. Some countries just do it way differently than others. Some can't (or don't) count accurately at all.
Consider China: an amazing COVID story of less than 6,000 COVID deaths total, with a population of 1.43 billion people or over one fifth of the entire world's population.