DHT has existed for 17 years - the cat's out of the bag. The anti-piracy companies have built their own crawlers.

They match swarm IP's and then notify ISP's who voluntarily hassle you on their behalf. An IP doesn't equal a person in USA.

And outside of the US? In Germany there's an "efficient" business of law companies acting on behalf of the copyright holders, subpoenaing the ISP to get the owner of the IP/connection and sending them a cease-and-desist with a hefty fee.

There's the next part, law companies specializing in "Here's the letter you have to send to say you agree to pay them without admitting guilt, that'll be € please!".

I think the demand is usually around 1000 Euro, so it's way cheaper to just pay for a VPN service, configure qBittorrent to only use your VPN interface, and torrent whatever the hell you want.