Bitcoin miners outside, illegal youth inside. This is a huge misconception in people's minds. Bitcoin is known to us as a gold mine. I thought they would just have arcade rooms in the basement below the mine and then use something cheap and obsolete like the Antminer S9 to mine which would be it. Most people probably only report these gambling machines because they lost money.
It might fool the police and inspectors but not anyone with a presupposition of crypto knowledge