Oh no, I would make that choice too, you're right. It's more just the whole attitude that's over-the-top even before he hears the call to help.
Though I should say that it's also kind of refreshing change from the way drug addiction storylines seem to often go on network TV. There you seem to always get situations where all their friends are only worried about them destroying themselves and planning interventions and all that no matter what the other person does. Where as in real life drug addicts can actually just be very annoying, and people often need to just ot deal with them to avoid getting sucked into the morass.
Also, I didn't realize Peter's rage was coming from so many other things, as somebody explained below. That explains a lot of his attitude that seemed a little much.