Welcome to SR!
The thing that pops out to me most about your post is the dichotomy between these thoughts:
I have had 30 years experience with Alanon and live my life by their principles.
I am not giving up though.......... He knows I am not going to stop.
They don't line up for me.
He's been hard-core drinking for how long? And you've been dating for less than a year? How is this yours to manage or dictate?
His enablers certainly aren't doing him any favors, but it's not up to you to step in & speak on his behalf. That's HIS side of the street, not yours, IMO. If he wants this situation to change, it's up to him to create that change.