I haven't seen it yet (probably won't) and I'll take your word for it that it's well done.

I want to mention my own thoughts on movies like this... big budget films almost always seem to slip in some "medicinal" agenda and/or message, for which movie audiences rarely have any filter.

In this case, I'm wondering if the "industry" pill they want the audience to swallow is that mentally ill people can eventually become dangerous, and even to suggest (through the emotional volatility of this film), that they probably will become dangerous? Thus, an audience will become even more receptive toward the idea of "red flag" gun laws to keep supposedly dangerous mentally ill people from obtaining firearms?

I'm just shooting in the dark here... let me know if I'm way off on this one. :)