To what end? If Jace/Jan is mentally unstable, his threats are probably less credible. Worst case, he might merit a psych eval.
If he is mentally stable, his threats might be taken seriously.
Are we talking about prosecution or just a lawsuit? Because those are different things.
They are different things.
Civil suit: Brianna might have an action for IIED or harassment (these are really the only potential torts I can think of here -- assault doesn't really apply because of the necessary intent issues, and defamation would be a non-starter. That said, I don't really do civil litigation, so my knowledge is basically limited to 1L and bar prep. Perhaps @AnOminous or @waffle might spot something I missed).
However, given the -- ahem -- "complexity" of these events, and the myriad First Amendment issues that could be raised, she'd be looking at paying high five figures (minimum) out of pocket to litigate against a kid who is, as we say, judgment proof. And she'd be hard-pressed to show damages. That's money that could be spent on whatever it is she does with her Patreon funds. Civil suit ain't happening.
Prosecution: This is where things get hairier. There's the old saying that any prosecutor worth his salt can "indict a ham sandwich" if he wants to. Nothing Jace said or did constitutes a "true threat," but he did tiptoe towards the line a couple times. And, as we've seen with some of these "reporters," Brianna is great at making herself a believable victim. If someone in law enforcement (esp. federal) buys her story, I know a lot of prosecutors who -- out of a combination of ego and a need to keep up their stats -- will hang on tenaciously even after they learn the case is bad.
My advice to @THE WRITER (personal advice, which is not intended to create, nor does it constitute an attorney-client relationship): (1) Take an hour or two to go back and make sure you have a record of any potential "threats" Brianna might bring up so that you will be ready with context if necessary. (2) If someone from any law enforcement agency contacts you about any of this, politely and calmly tell them that you'd love to talk about it, that you know they're just doing their job, but even though you did nothing wrong, and Brianna is crazy and vindictive, and you have nothing to hide, your Uncle Saul said that you really should have counsel present for any conversations. Then find yourself a lawyer and schedule a formal meeting with the Jerkop (preferably a teleconference, which is almost always convenient for everyone involved and makes sure you and your counsel have a recording).
PS. If you need help finding a lawyer, PM me and I will contact my legion of flying monkeys / former classmates.
You guys are extrapolating on my original post, I just was toying with the notion of if it hypothetically went to court, which I do not think it ever will.
Brianna said in a couple of those articles that she wants to go to court and is actively talking with law enforcement. Will anything come of it? Probably not.
Will anyone believe Jan is evil/scary/crazy? Probably not. But to an outsider -- especially an older, more conservative person, as a lot of LEOs tend to be -- getting a load of Deagle Nation will be unsettling.
Again, everything will probably be fine. But given Brianna's publicly stated intention to go after Jan legally, and given how weird/crazy a lot of the Deagle Nation stuff can look, this isn't something to joke about. Yes, he did nothing wrong. But given the points above, he should be prepared.