Most episodes involve some fictional futuristic technology being abused, but that was one of the few episodes that involved only technology that definitely exists today.

• National Anthem
• Waldo Moment (arguable, as it would definitely take some tinkering to set up that kind of Vtuber system, not just using an off-the-shelf system)
• Hang the DJ (arguable, assuming what we are seeing is just a fictionalization of a bunch of software simulations)
• Metalhead (arguable, as robot dogs do not seem quite that advanced yet, but definitely soon)
• Bandersnatch (arguable that the multiple timelines and everything are just the character hallucinating or whatever)
• Smithereens
• Loch Henry
• Mazey Day (though the technology is absolutely contemporary, it does feature a mythological creature or whatever)
• Demon 79 (while it takes place in the past with just old technology, it features supernatural shenanigans again)

EDIT: Fifteen Million Merits is also barely futuristic technology.

Blackmailing people with content like that is happening every day. Just its normally to get you to send crypto to scammers.

That's another great one, where great == leaving you with a persistent sense of dread after viewing.