My mom is an alcoholic. By the time I accepted that she had a problem and put a word to the problem, the rest of my family was doing their best to pretend it didn't exist. Like your family, my family took on the attitude, "Don't talk about it or if you have to, treat it like it's a petty annoyance." Or sometimes they were simply indifferent to the whole situation. It's made me feel very, very alone. I've slowly been realizing that my family is sick too. I don't know that I would exactly apply the word "Enabler" to them, but they certainly do not make an effort to express how serious the situation is. I'm sure in some sense they are in denial mode.
In the past the way I chose to deal with it was to point out their behavior, but they wouldn't acknowledge it. Instead they would try to make me feel as if I was overreacting and emotionally unstable. I made a post a day or two ago in this forum referring to the latest "event" where this sort of thing played out.
Right now I feel like in my situation, it would be beneficial to me to put some distance between myself and my family. My sister has become really comfortable with my mother's illness because at the moment my mother while not necessarily well off, isn't in obvious distress. My mother is very sick, her liver is failing and there is no telling how much time she has left. Eventually there will come a time when her body reflects very obviously on the outside just how sick she is on the inside; then I expect my family can't keep hiding from the truth. We will talk then.
I'm sorry you're in this situation. We always hope when things get hard family will bond together, but sometimes ignoring the problem is the only emotionally viable option for people who are not yet willing to take on the full force of the situation.