I'm a bit concerned that the moment Chris starts talking with authorities he fucks it up and ends up going on a rant that bypasses the actual crimes but instead is a diatribe on his bizarre headcanon.
They end up hearing insane gibberish for however he's allowed to speak, and by some miracle he gets to the point of extortion they're thinking "hmmmm, how reliable of a witness is this guy?"
I know you've got Discord logs and receipts, but isn't it possible anyone not intimately familiar with Chris' delusions might look at ig all and say "well here's someone who is clearly delusional/insane and sent some guys gift cards."
There's plenty of crazy people out there with crazy delusions who also accuse very real people of committing very real crimes, yet they are rarely taken seriously. You've got discord logs of nigh-incomprehensible gibberish roleplay with demands for money and videos. Do you really think it will get to a point where someone in a position to do anything about this is going to sit down and look at the main concrete evidence of extortion, the logs, and read them? Comb through all that bullshit and look for evidence a crime has taken place?
Even then, we have people talking to Chris through pseudonyms via online chat as fictional entities. Sure, Null and co. are able to confirm Wise and Boyd's identities through the means at their disposal but authorities will have to do this as well, independently. Are they going to make that effort? Dozens of hours, if not days worth of investigative work? And your primary witness and victim is a crazy person who will most likely give the worst, most unreliable account of this mess possible.
I'm not saying don't help, but all these things taken together make this a huge uphill battle for Chris to see justice.
Also, Sonichu, Neptunia, MLP, and now fucking Marvel lore are all involved? Chris has fucking lost it. Motherfucker really thinks he has an infinity stone. Imagine if he brings that along to a shrink or police station.