Welcome. I hope you find insight here. It is surprising isn' it. We hear about the big bad times, but there are just as many times that they drink and remain the same person until you push the issue. Then they reverse it all back to being YOUR problem and they have sacrificed so much...quack, quack, quack.
I would say for him to have such a reaction means that he is much deeper into this than you realize. Stick to what you believe in. What you are reading is correct, I too have not seen times that it does not get better without them getting help.
I am sorry you are going through this. I hope you take the time to work on you and realize this is his issue and he had to fix it.
Blessings!