Am I overreacting to getting annoyed every time my bf says we're "both struggling?"

I was recently diagnosed with classic Hodgkin's Lymphoma. Even before diagnosis, when I would say how anxious and terrible I felt, he'd say things like "we've got this" but then also "I'm struggling too. We're both struggling". For some reason, this makes me SO angry. It feels like it centres back to him and asks that there be space for managing his emotions when I'm in the eye of a shitstorm and can barely manage my own.

Admittedly, I'm beyond irritable right now because the medical system failed me in a colossal way and I've felt like I've had my head under a medical guillotine for months now. So did you experience this? Am I overreacting? It's also felt like on the most important days (diagnosing, treatment plan etc), he's been so distant and not checking in. On those days, I cried more over his lack of support (or I guess support that didn't align with my needs) than the actual cancer. I and the relationship feel very fragile atm.