That's a terrible definition of extreme poverty. Also, inequality matters. It's nice that the crumbs poor people receive are getting bigger, but things like social unrest, wars, revolutions, crime, famine are due to inequality and unequal distribution of resources. Being poor isn't a problem by itself, it's the other things that come with it which are a problem.

Having cell phones and making more than $1.90 per day didn't prevent the revolutions in Libya and Syria, and subsequent deaths/displacement of millions. Actual development and reducing inequality is massively important.