I don't remember how it was billed, but it was Rose's story, start to finish.

I think Jack wasn't fridged. His death was tragic, but it was his life that inspired/moved Rose-- had he lived or died, she would've never gone back to her old life. The fridge is, IMO, a death that exists merely to change the lead's life/perspective/what have you.

Oh, and I'll add-- like Hokuto, Jack chose his death to save Rose's, which is a level of agency the fridged aren't allowed.