Perhaps the most helpful thought arising in response to this story in my mind is that it's a good example for the fact that every choice, declaration and action will have consequences, often quite complex ones and some that we may not expect initially. That whole karma business.
I personally doubt that sober people do not react negatively to a relapse of someone who is their peers (especially if s/he was sort of an idol), and even more if it's repetitive. Judgment is everywhere and is impossible to avoid, I think. Unconditional acceptance is pretty much an illusion, IMO at least. What is possible though is to regulate (to a certain extent) how we react to what we see, how we express a reaction, or refrain from reacting. but even when someone does their best to remain neutral and supportive, it's likely there will still be detectable vibes generated unconsciously. As well as discomfort and embarrassment. They are pretty much inevitable, realistic consequences of the scenario.