Your unemployed, alcoholic partner.
You want your unemployed alcoholic partner to make amends with your son.
If you want your umemployed alcoholic partner to stop drinking, and to find a job, and sort out his life, and stop fighting with people half his age, then of course you're not bring unreasonable to want that.
But it doesn't matter whether you're reasonable or not to want this. Quitting alcohol is a big deal, and something that someone needs to do for themselves. I know this, having done it recently myself, and it sounds like you know it too, if you've recently quit drinking.
Reasonable or unreasonable doesn't come into it with addiction.
But, you are being unreasonable to be in a relationship with an unemployed alcoholic, especially one who negatively influenced you and made you drink too much. It's not good for you, and it's making your child anxious and worried about you. That's not okay.
What do you hope to get from this relationship? It's not stability, surely. Can't be a nice life. If it is just love, then I'd give him an ultimatum. Quit drinking, and get a job, or I'm leaving.
Because honestly OP, if he doesn't get a job, he won't stay sober because sitting around all day makes it so tempting for a recovering alcoholic to drink. And if he doesn't quit drinking, especially at the rate he does, I'm sorry to say that he won't live much longer. You're setting youself up for serious pain and heartbreak by staying with him if he won't quit drinking.
Don't ruin your life by staying with this man as he is!
And join some activities, and socialise, and try to find some friends, because I'm sure if you had friends then they'd be steering you well away from this man and you'd see that his behaviour is dangerous and not normal and not good for you.