Some people need a substitute, some don't.
I think it is wise to offer it, in case they are one of the people who do need a power greater than themselves.
If everyone could "just stop drinking" under their own steam, no one would die from alcoholism. We'd all just tap our inner resources.
Paradoxically, it requires more pig headed stubborn will power to drink yourself to death than it does to stop.
Ever watched the movie "Leaving Las Vegas"