You can counterclaim that the content you're sharing is in fact fair use or otherwise not infringing, the original claiming party has some time to sue you, and if they don't, you can sue them for damages caused by the takedown. I don't know whether anything can be done about a takedown notice on content that never existed in the first place, perhaps some generic harassment complaint?
You can counter-sue them regardless of whether or not they sue you. They have made a claim that you are in violation of the law. You are allowed to go to court first to get a "declaratory judgment" that you are not. https://youtu.be/-7H8SZMwz24?t=1320 (30 seconds to watch relevant part)
Proof that the person sending the notice isn't "authorized on behalf of the copyright holder": https://twitter.com/Lionheart/status/1671349063931838464
Tweet about the automatic rejection of the counter-notice: https://twitter.com/Azrial_Vanity/status/1671696220190810113
Tweet about the initial DMCA takedown: https://twitter.com/Azrial_Vanity/status/1671323777978736643
Mention of the $100 ransom: https://twitter.com/Azrial_Vanity/status/1671332970836140032
Any youtube people on here can help?