I read it that they were disputing the measurement of poverty itself. Like, if you measure poverty by equivalent purchasing power, that does not take into account actual access to food through community and subsistence.
Check this one out as well: https://www.sciencedirect.com/science/article/pii/S0305750X22002169
While you're right they still do talk about extreme poverty - I believe they define it much better here as the "inability to access essential goods." Which I think is in line with how they are discussing this $1.90/day regular poverty today, actually.