This all depends to me, it may prove hard to word my feelings on this - so bare with.
I would say that in “hating” ones drunkedness, you are hating a part of that person, and that it would be far better shown in love. Attempting to give them all the support they can.
I do not really want to generalise too much, as we are all different, the assitance some need will be different to the style of assistance that others need. Humans are very volatile beings, frequently we do not understand each other, and those who are deemed to need help, may often interpret what one may consider a message of love, to be exactly the opposite.
Thus, I feel it is wise to extend love - unconditionally, first and foremost, and then, upon having established a good enough relationship with a person, provide assitance in other forms, such as education into religious matters.
I would not want statements and use of scripture, to make one feel unloved, and to remove one from God’s love, I would rather prefer delaying the “correction” period, and simply extending love.
Note, if you don’t get my drift on some matters - which is admitedly likely (poor explanations) please ask for me to elaborate, as opposed to jumping to conclusions. - Thanks