(I'm reading the original comment a couple times and I'm wondering if I'm being trolled.)
Mortgages frequently get bundled up and sold as securities. That's just how it works. Blackrock is one institutional buyer. A mortgage is someone's liability and another's security.
Nothing about "mortgage securities" implies poor lending practices or overleveraging.
And that's where I see the "bad faith" in the conversation.
Why make a jump from "You are reminded of this scene" to "You don't understand how the system works"?
Even if we assume that one follows from the other (it doesn't, that's more than disingenuous) - than the way this was phrased is unnecessarily combative, aggressive and derogatory.
That's pure speculation, or worse; insinuation.