It's just building and gamify strategically. There's no magic here. It works. Bots can adapt all they want. They're still constraint and limited by technology and money.
What is magic is humans ability to use inference and deduction to see things that are not right in front of us. It's hard to see this online especially the way some conversations go.... but regardless of that, people could easily detect patterns that are used in the wild. We just need data. Lemmy communities are perfectly set up for this for now.