Sirius disliked awkward people. They were so awkward for no good reason. Most of the time anyway, it was no good reason. And he didn't view the current situation as awkward or reasonable to be awkward. But even Sirius knew telling them not to be awkward really wouldn't work.
"Sure we don't know who all are death eaters, but the way those Carrow siblings were talking, I'd say it's a safe bet they are," Sirius began the conversation, already excited.