Hmm I'm always wary of those statements. The concept of "living in extreme poverty" is not a good way to measure progress in any sense. First because "poverty means earning less than x" implies that x needs to be updated and its not obvious how to do so; indeed it can be manipulated to push an agenda. Second because it reduces everything to money. You can make more money, but is your life actually improved? Sometimes yes, but surely not always. For example: millions of people have been relocated from the countryside to factories in China. They are now "lifted from poverty" according to that number. But now they live in smog-infested cities, stacked like sardines, working 12 hours per day, where before they had their homes and some sense of peaceful community. Have their lives improved?

In the end, you're judging the success of a system (capitalism) with a metric internal to that system. What does that tell you?

It's in fact so ridiculous a measure that a slave/indentured servant "earning" 5$ a day is considered a-ok in that metric.

EDIT: I'll just rememind that downvote is not a "disagree" button.