The fact that poverty exists at all when there is unfathomable amounts of wealth[1] is a glaring sign of capitalist failure. Pointing to a reduction in the rates of poverty is not proving capitalism’s success. It’s pointing out capitalism’s most damaging and least ameliorable problem: poverty!
Poverty does not have to exist. Having “only” 750million people living beneath the poverty line globally (and a similar proportion in the U.S., about 11%) is not success!!! It is a mitigation of failure!
[1] - One commenter on this site last week or so in the VC community commented there are “trillions sloshing around.”