Crying is definitely a release for me. I usually feel better, a little more solid, after really crying.
However,
drunk crying is not. I thought for many years it was somehow therapeutic, but it's not. I never remember what I even cried about. I never recall these memories. It's not productive like genuine sober crying is. I don't feel better afterwards, I feel even worse.
Sometimes I'll just get drunk and start writing depressing poetry and just cry the entire time.
After awhile, this simply turned into repetitive rumination and not anything healthy like a release. It was as if I was almost celebrating being sad, instead of dealing with it.
Just my personal anecdote. I've never grieved the loss of a family member. My condolences
Don't relapse thinking it's going to help you process it. That's your cunning addiction trying to trick you.