it is, it absolutely is but in my observation, you really can't stop something like that anywhere, there will always be people like that unless you put the clamps down really heavy.
I had an old friend who met a girlfriend in rehab, which sounds like a stupid on idea on the face of it and it was. I think they were pill poppers though or at least the program wasn't strictly alcohol. My friend was an alcoholic and if i recall, it wasn't AA, just some other program. Anyway, I chided him, telling him how stupid it was meeting someone at a place like that with similar issues at a bad time and then trying to make a go of it. Of course it didn't work and got pretty nasty.
As far as our friendship, it didn't last long. I liked him a lot and he was a good man but I'm a loner and if you've been around enough alcoholics/addicts, when they are constantly trying to kick, they hate being alone and hate doing nothing, it's draining being around them. My sister was like that when she tried to stop and if you already have a job taking 40-60 hours a week and you need to rest when you're not working and not "what are we gonna do next?" "then what?" it's just too draining. It's not fair that we live in the world we live in but truly, we're all alone and all on our own underneath all the pretenses.