MC: "I can't believe this! Throwing away the weak? I'd never do such a thing!"
Also MC: "Fuck off princess, I can't deal with dead weight and I can't guarantee your safety."
Obviously the situations aren't 1:1, but like man, I feel like he should introspect a bit here and maybe think about how his situation affected the group and how his decision here mirrors theirs. Like, should the group have just kept him on until he inevitably gets himself killed as they go to more dangerous areas? From his behavior here, it seems like he knows that's ridiculous. And the only real alternative to that would be that the whole party just stalls out and gets limited to what he can deal with, which would just be selfishness on his part.