About this time I remembered the TenForward blog post about mutual aid and had a read over it for some context.
It's a... clumsy quasi-Marxist analysis that contains the following lines.
"[The] upper middle-class I am talking about workers... who make USD$100,000 or above per year."
"As for the poor, since I have already defined the only other class relevant to this essay, can broadly be classified as 'the rest of us'."
https://tenforward.blog/on-mutual-aid-and-class-division-in-the-fediverse/