I saw someone say that fatphobia is not “a coherent system of oppression” and I don’t know if they meant that it’s not actually oppressive or that the oppression looks different across groups of fat people. The first interpretation is not really defensible. Fat people have a harder time getting jobs, are paid less, suffer life-threatening medical discrimination, are traumatized in schools, camps, and other social environments from a young age, are much more likely to be poor, and on and on.
The second interpretation is an essential point, though. Fatphobic oppression does vary across groups. Fat women tend to have it worse than fat men because of the interaction between sexism and fatphobia, and fat Black women are in a more vulnerable position than fat white women because of the interactions among racism, sexism, and fatphobia, and so on – you’re likely to suffer worse if you’re trans and fat than cis and fat, etc.
Fatphobia is rooted in capitalism, classism, racism and white supremacy, patriarchy, ableism, and other violent interconnected systems. It’s an intersectional issue and we need to treat it that way for our anti-fatphobic work to have any teeth.