Vault is an Obsidian thing. This is just an "agent" (read: LLM harness in a loop) with access to it, a system prompt and a few markdown files. Nothing meaningful has changed in the LLM primitives, nor will it :)
The American discourse around these killings are actually insane. In any other developed country it wouldn't be possible to escalate these situations like this regardless of what you were doing.
The tact aspect seems like a real possibility. In a world where users are likely to cut&paste responses it can't really be sprinkling in references like this.