1. If you’re connecting to random free Wi-Fi, you’re leaving yourself wide open to attacks.
2. A lot of security researchers play with penetration testing scenarios like this. It’s how you learn to defend against techniques that real attackers use.

Eh? I don’t understand. Either it works on Linux, or it doesn’t. Seems like the author just doesn’t know how to troubleshoot some compatibility issue on whatever desktop Linux distro they’re using.